Home / 931,490.28-1,397,235.24-398,665.80

Finding the Fourth Proportional to 931,490.28, 1,397,235.24 and 398,665.80

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Solution

The fourth proportional to 931,490.28, 1,397,235.24 and 398,665.80 is: 597,998.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    931,490.28 : 1,397,235.24 = 398,665.80 : x
  2. Step 2: Convert to fraction form
    931,490.28/1,397,235.24 = 398,665.80/x
  3. Step 3: Cross multiply
    931,490.28x = 1,397,235.24 × 398,665.80
  4. Step 4: Simplify right side
    931,490.28x = 557,029,904,742.79
  5. Step 5: Solve for x
    x = 557,029,904,742.79/931,490.28
  6. Step 6: Final answer
    x = 597,998.62

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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.