Home / 747,378.50-1,121,057.22-347,795.78

Finding the Fourth Proportional to 747,378.50, 1,121,057.22 and 347,795.78

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Solution

The fourth proportional to 747,378.50, 1,121,057.22 and 347,795.78 is: 521,688.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    747,378.50 : 1,121,057.22 = 347,795.78 : x
  2. Step 2: Convert to fraction form
    747,378.50/1,121,057.22 = 347,795.78/x
  3. Step 3: Cross multiply
    747,378.50x = 1,121,057.22 × 347,795.78
  4. Step 4: Simplify right side
    747,378.50x = 389,898,970,254.53
  5. Step 5: Solve for x
    x = 389,898,970,254.53/747,378.50
  6. Step 6: Final answer
    x = 521,688.77

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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.