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Finding the Fourth Proportional to 658,109.80, 988,331.10 and 508,713.40

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Solution

The fourth proportional to 658,109.80, 988,331.10 and 508,713.40 is: 763,971.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,109.80 : 988,331.10 = 508,713.40 : x
  2. Step 2: Convert to fraction form
    658,109.80/988,331.10 = 508,713.40/x
  3. Step 3: Cross multiply
    658,109.80x = 988,331.10 × 508,713.40
  4. Step 4: Simplify right side
    658,109.80x = 502,777,274,206.74
  5. Step 5: Solve for x
    x = 502,777,274,206.74/658,109.80
  6. Step 6: Final answer
    x = 763,971.72

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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.