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Finding the Fourth Proportional to 486,045.60, 728,751.60 and 436,279.20

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Solution

The fourth proportional to 486,045.60, 728,751.60 and 436,279.20 is: 654,134.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,045.60 : 728,751.60 = 436,279.20 : x
  2. Step 2: Convert to fraction form
    486,045.60/728,751.60 = 436,279.20/x
  3. Step 3: Cross multiply
    486,045.60x = 728,751.60 × 436,279.20
  4. Step 4: Simplify right side
    486,045.60x = 317,939,165,046.72
  5. Step 5: Solve for x
    x = 317,939,165,046.72/486,045.60
  6. Step 6: Final answer
    x = 654,134.44

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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.