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Finding the Fourth Proportional to 637,801.70, 955,390.35 and 438,347.30

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Solution

The fourth proportional to 637,801.70, 955,390.35 and 438,347.30 is: 656,619.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    637,801.70 : 955,390.35 = 438,347.30 : x
  2. Step 2: Convert to fraction form
    637,801.70/955,390.35 = 438,347.30/x
  3. Step 3: Cross multiply
    637,801.70x = 955,390.35 × 438,347.30
  4. Step 4: Simplify right side
    637,801.70x = 418,792,780,368.56
  5. Step 5: Solve for x
    x = 418,792,780,368.56/637,801.70
  6. Step 6: Final answer
    x = 656,619.10

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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.