Home / 747,419.45-1,031,438.55-407,887.70

Finding the Fourth Proportional to 747,419.45, 1,031,438.55 and 407,887.70

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Solution

The fourth proportional to 747,419.45, 1,031,438.55 and 407,887.70 is: 562,884.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    747,419.45 : 1,031,438.55 = 407,887.70 : x
  2. Step 2: Convert to fraction form
    747,419.45/1,031,438.55 = 407,887.70/x
  3. Step 3: Cross multiply
    747,419.45x = 1,031,438.55 × 407,887.70
  4. Step 4: Simplify right side
    747,419.45x = 420,711,097,850.84
  5. Step 5: Solve for x
    x = 420,711,097,850.84/747,419.45
  6. Step 6: Final answer
    x = 562,884.87

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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.