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Finding the Fourth Proportional to 709,794, 1,064,166.12 and 429,248.88

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Solution

The fourth proportional to 709,794, 1,064,166.12 and 429,248.88 is: 643,555.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,794 : 1,064,166.12 = 429,248.88 : x
  2. Step 2: Convert to fraction form
    709,794/1,064,166.12 = 429,248.88/x
  3. Step 3: Cross multiply
    709,794x = 1,064,166.12 × 429,248.88
  4. Step 4: Simplify right side
    709,794x = 456,792,115,143.95
  5. Step 5: Solve for x
    x = 456,792,115,143.95/709,794
  6. Step 6: Final answer
    x = 643,555.90

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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.