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Finding the Fourth Proportional to 499,511.70, 749,267.55 and 286,279.20

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Solution

The fourth proportional to 499,511.70, 749,267.55 and 286,279.20 is: 429,418.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,511.70 : 749,267.55 = 286,279.20 : x
  2. Step 2: Convert to fraction form
    499,511.70/749,267.55 = 286,279.20/x
  3. Step 3: Cross multiply
    499,511.70x = 749,267.55 × 286,279.20
  4. Step 4: Simplify right side
    499,511.70x = 214,499,714,799.96
  5. Step 5: Solve for x
    x = 214,499,714,799.96/499,511.70
  6. Step 6: Final answer
    x = 429,418.80

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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.