Home / 565,379,905,487.65-780,223,207,089.58-308,462,976,758.53

Finding the Fourth Proportional to 565,379,905,487.65, 780,223,207,089.58 and 308,462,976,758.53

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Solution

The fourth proportional to 565,379,905,487.65, 780,223,207,089.58 and 308,462,976,758.53 is: 425,678,328,251.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    565,379,905,487.65 : 780,223,207,089.58 = 308,462,976,758.53 : x
  2. Step 2: Convert to fraction form
    565,379,905,487.65/780,223,207,089.58 = 308,462,976,758.53/x
  3. Step 3: Cross multiply
    565,379,905,487.65x = 780,223,207,089.58 × 308,462,976,758.53
  4. Step 4: Simplify right side
    565,379,905,487.65x = 240,669,972,994,938,871,218,176
  5. Step 5: Solve for x
    x = 240,669,972,994,938,871,218,176/565,379,905,487.65
  6. Step 6: Final answer
    x = 425,678,328,251.44

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Double scale
Find fourth proportional to 565,379,905,488.65, 780,223,207,090.96 and 308,462,976,759.53
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.