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Finding the Fourth Proportional to 716,049.48, 988,155.54 and 393,761.96

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Solution

The fourth proportional to 716,049.48, 988,155.54 and 393,761.96 is: 543,395.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    716,049.48 : 988,155.54 = 393,761.96 : x
  2. Step 2: Convert to fraction form
    716,049.48/988,155.54 = 393,761.96/x
  3. Step 3: Cross multiply
    716,049.48x = 988,155.54 × 393,761.96
  4. Step 4: Simplify right side
    716,049.48x = 389,098,057,274.48
  5. Step 5: Solve for x
    x = 389,098,057,274.48/716,049.48
  6. Step 6: Final answer
    x = 543,395.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.