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Finding the Fourth Proportional to 710,644.92, 980,692.56 and 388,359.96

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Solution

The fourth proportional to 710,644.92, 980,692.56 and 388,359.96 is: 535,938.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,644.92 : 980,692.56 = 388,359.96 : x
  2. Step 2: Convert to fraction form
    710,644.92/980,692.56 = 388,359.96/x
  3. Step 3: Cross multiply
    710,644.92x = 980,692.56 × 388,359.96
  4. Step 4: Simplify right side
    710,644.92x = 380,861,723,373.90
  5. Step 5: Solve for x
    x = 380,861,723,373.90/710,644.92
  6. Step 6: Final answer
    x = 535,938.15

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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.