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Finding the Fourth Proportional to 576,757.40, 865,136.10 and 417,325.10

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Solution

The fourth proportional to 576,757.40, 865,136.10 and 417,325.10 is: 625,987.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    576,757.40 : 865,136.10 = 417,325.10 : x
  2. Step 2: Convert to fraction form
    576,757.40/865,136.10 = 417,325.10/x
  3. Step 3: Cross multiply
    576,757.40x = 865,136.10 × 417,325.10
  4. Step 4: Simplify right side
    576,757.40x = 361,043,009,446.11
  5. Step 5: Solve for x
    x = 361,043,009,446.11/576,757.40
  6. Step 6: Final answer
    x = 625,987.65

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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.