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Finding the Fourth Proportional to 886,410.60, 1,329,615.90 and 413,143.80

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Solution

The fourth proportional to 886,410.60, 1,329,615.90 and 413,143.80 is: 619,715.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    886,410.60 : 1,329,615.90 = 413,143.80 : x
  2. Step 2: Convert to fraction form
    886,410.60/1,329,615.90 = 413,143.80/x
  3. Step 3: Cross multiply
    886,410.60x = 1,329,615.90 × 413,143.80
  4. Step 4: Simplify right side
    886,410.60x = 549,322,565,466.42
  5. Step 5: Solve for x
    x = 549,322,565,466.42/886,410.60
  6. Step 6: Final answer
    x = 619,715.70

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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.