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Finding the Fourth Proportional to 711,807.52, 982,294.46 and 389,517.68

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Solution

The fourth proportional to 711,807.52, 982,294.46 and 389,517.68 is: 537,534.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,807.52 : 982,294.46 = 389,517.68 : x
  2. Step 2: Convert to fraction form
    711,807.52/982,294.46 = 389,517.68/x
  3. Step 3: Cross multiply
    711,807.52x = 982,294.46 × 389,517.68
  4. Step 4: Simplify right side
    711,807.52x = 382,621,062,565.58
  5. Step 5: Solve for x
    x = 382,621,062,565.58/711,807.52
  6. Step 6: Final answer
    x = 537,534.45

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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.