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Finding the Fourth Proportional to 555,766.80, 766,948.16 and 314,044.18

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Solution

The fourth proportional to 555,766.80, 766,948.16 and 314,044.18 is: 433,375.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,766.80 : 766,948.16 = 314,044.18 : x
  2. Step 2: Convert to fraction form
    555,766.80/766,948.16 = 314,044.18/x
  3. Step 3: Cross multiply
    555,766.80x = 766,948.16 × 314,044.18
  4. Step 4: Simplify right side
    555,766.80x = 240,855,606,009.71
  5. Step 5: Solve for x
    x = 240,855,606,009.71/555,766.80
  6. Step 6: Final answer
    x = 433,375.30

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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.