Home / 711,807.27-982,294.12-389,517.44

Finding the Fourth Proportional to 711,807.27, 982,294.12 and 389,517.44

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Solution

The fourth proportional to 711,807.27, 982,294.12 and 389,517.44 is: 537,534.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,807.27 : 982,294.12 = 389,517.44 : x
  2. Step 2: Convert to fraction form
    711,807.27/982,294.12 = 389,517.44/x
  3. Step 3: Cross multiply
    711,807.27x = 982,294.12 × 389,517.44
  4. Step 4: Simplify right side
    711,807.27x = 382,620,686,037.98
  5. Step 5: Solve for x
    x = 382,620,686,037.98/711,807.27
  6. Step 6: Final answer
    x = 537,534.11

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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.