Home / 520,064,239.33-780,364,559.71-243,743,525.65

Finding the Fourth Proportional to 520,064,239.33, 780,364,559.71 and 243,743,525.65

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Solution

The fourth proportional to 520,064,239.33, 780,364,559.71 and 243,743,525.65 is: 365,740,988.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,064,239.33 : 780,364,559.71 = 243,743,525.65 : x
  2. Step 2: Convert to fraction form
    520,064,239.33/780,364,559.71 = 243,743,525.65/x
  3. Step 3: Cross multiply
    520,064,239.33x = 780,364,559.71 × 243,743,525.65
  4. Step 4: Simplify right side
    520,064,239.33x = 190,208,809,076,025,344
  5. Step 5: Solve for x
    x = 190,208,809,076,025,344/520,064,239.33
  6. Step 6: Final answer
    x = 365,740,988.69

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.