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Finding the Fourth Proportional to 616,013.80, 924,020.70 and 525,812.20

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Solution

The fourth proportional to 616,013.80, 924,020.70 and 525,812.20 is: 788,718.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    616,013.80 : 924,020.70 = 525,812.20 : x
  2. Step 2: Convert to fraction form
    616,013.80/924,020.70 = 525,812.20/x
  3. Step 3: Cross multiply
    616,013.80x = 924,020.70 × 525,812.20
  4. Step 4: Simplify right side
    616,013.80x = 485,861,357,112.54
  5. Step 5: Solve for x
    x = 485,861,357,112.54/616,013.80
  6. Step 6: Final answer
    x = 788,718.30

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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.