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Finding the Fourth Proportional to 717,301.40, 988,192.23 and 499,134.88

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Solution

The fourth proportional to 717,301.40, 988,192.23 and 499,134.88 is: 687,634.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,301.40 : 988,192.23 = 499,134.88 : x
  2. Step 2: Convert to fraction form
    717,301.40/988,192.23 = 499,134.88/x
  3. Step 3: Cross multiply
    717,301.40x = 988,192.23 × 499,134.88
  4. Step 4: Simplify right side
    717,301.40x = 493,241,213,684.57
  5. Step 5: Solve for x
    x = 493,241,213,684.57/717,301.40
  6. Step 6: Final answer
    x = 687,634.54

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Double scale
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1.5x scale

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.