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Finding the Fourth Proportional to 530,551, 730,538.94 and 399,918.46

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Solution

The fourth proportional to 530,551, 730,538.94 and 399,918.46 is: 550,665.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,551 : 730,538.94 = 399,918.46 : x
  2. Step 2: Convert to fraction form
    530,551/730,538.94 = 399,918.46/x
  3. Step 3: Cross multiply
    530,551x = 730,538.94 × 399,918.46
  4. Step 4: Simplify right side
    530,551x = 292,156,007,854.83
  5. Step 5: Solve for x
    x = 292,156,007,854.83/530,551
  6. Step 6: Final answer
    x = 550,665.27

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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.