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Finding the Fourth Proportional to 710,508.34, 980,472.36 and 388,229.50

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Solution

The fourth proportional to 710,508.34, 980,472.36 and 388,229.50 is: 535,740.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,508.34 : 980,472.36 = 388,229.50 : x
  2. Step 2: Convert to fraction form
    710,508.34/980,472.36 = 388,229.50/x
  3. Step 3: Cross multiply
    710,508.34x = 980,472.36 × 388,229.50
  4. Step 4: Simplify right side
    710,508.34x = 380,648,294,086.62
  5. Step 5: Solve for x
    x = 380,648,294,086.62/710,508.34
  6. Step 6: Final answer
    x = 535,740.78

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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.