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Finding the Fourth Proportional to 607,691.80, 838,635.42 and 381,462.04

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Solution

The fourth proportional to 607,691.80, 838,635.42 and 381,462.04 is: 526,430.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    607,691.80 : 838,635.42 = 381,462.04 : x
  2. Step 2: Convert to fraction form
    607,691.80/838,635.42 = 381,462.04/x
  3. Step 3: Cross multiply
    607,691.80x = 838,635.42 × 381,462.04
  4. Step 4: Simplify right side
    607,691.80x = 319,907,578,129.46
  5. Step 5: Solve for x
    x = 319,907,578,129.46/607,691.80
  6. Step 6: Final answer
    x = 526,430.63

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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.