Home / 740,665.38-1,022,181.15-418,434.60

Finding the Fourth Proportional to 740,665.38, 1,022,181.15 and 418,434.60

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Solution

The fourth proportional to 740,665.38, 1,022,181.15 and 418,434.60 is: 577,475.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    740,665.38 : 1,022,181.15 = 418,434.60 : x
  2. Step 2: Convert to fraction form
    740,665.38/1,022,181.15 = 418,434.60/x
  3. Step 3: Cross multiply
    740,665.38x = 1,022,181.15 × 418,434.60
  4. Step 4: Simplify right side
    740,665.38x = 427,715,960,627.79
  5. Step 5: Solve for x
    x = 427,715,960,627.79/740,665.38
  6. Step 6: Final answer
    x = 577,475.30

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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.