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Finding the Fourth Proportional to 684,665.28, 944,832.60 and 382,859.28

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Solution

The fourth proportional to 684,665.28, 944,832.60 and 382,859.28 is: 528,342.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    684,665.28 : 944,832.60 = 382,859.28 : x
  2. Step 2: Convert to fraction form
    684,665.28/944,832.60 = 382,859.28/x
  3. Step 3: Cross multiply
    684,665.28x = 944,832.60 × 382,859.28
  4. Step 4: Simplify right side
    684,665.28x = 361,737,928,956.53
  5. Step 5: Solve for x
    x = 361,737,928,956.53/684,665.28
  6. Step 6: Final answer
    x = 528,342.74

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Double scale
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Similar ratio
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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.