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Finding the Fourth Proportional to 528,869,707.80, 793,304,561.70 and 165,400,805.40

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Solution

The fourth proportional to 528,869,707.80, 793,304,561.70 and 165,400,805.40 is: 248,101,208.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,869,707.80 : 793,304,561.70 = 165,400,805.40 : x
  2. Step 2: Convert to fraction form
    528,869,707.80/793,304,561.70 = 165,400,805.40/x
  3. Step 3: Cross multiply
    528,869,707.80x = 793,304,561.70 × 165,400,805.40
  4. Step 4: Simplify right side
    528,869,707.80x = 131,213,213,432,674,000
  5. Step 5: Solve for x
    x = 131,213,213,432,674,000/528,869,707.80
  6. Step 6: Final answer
    x = 248,101,208.10

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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.