Home / 749,234.30-1,123,851.45-434,500.70

Finding the Fourth Proportional to 749,234.30, 1,123,851.45 and 434,500.70

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Solution

The fourth proportional to 749,234.30, 1,123,851.45 and 434,500.70 is: 651,751.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    749,234.30 : 1,123,851.45 = 434,500.70 : x
  2. Step 2: Convert to fraction form
    749,234.30/1,123,851.45 = 434,500.70/x
  3. Step 3: Cross multiply
    749,234.30x = 1,123,851.45 × 434,500.70
  4. Step 4: Simplify right side
    749,234.30x = 488,314,241,721.02
  5. Step 5: Solve for x
    x = 488,314,241,721.02/749,234.30
  6. Step 6: Final answer
    x = 651,751.05

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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.