Home / 749,234.60-1,123,851.90-429,057.80

Finding the Fourth Proportional to 749,234.60, 1,123,851.90 and 429,057.80

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Solution

The fourth proportional to 749,234.60, 1,123,851.90 and 429,057.80 is: 643,586.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    749,234.60 : 1,123,851.90 = 429,057.80 : x
  2. Step 2: Convert to fraction form
    749,234.60/1,123,851.90 = 429,057.80/x
  3. Step 3: Cross multiply
    749,234.60x = 1,123,851.90 × 429,057.80
  4. Step 4: Simplify right side
    749,234.60x = 482,197,423,739.82
  5. Step 5: Solve for x
    x = 482,197,423,739.82/749,234.60
  6. Step 6: Final answer
    x = 643,586.70

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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.