Home / 724,745.92-1,000,115.68-402,476.64

Finding the Fourth Proportional to 724,745.92, 1,000,115.68 and 402,476.64

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Solution

The fourth proportional to 724,745.92, 1,000,115.68 and 402,476.64 is: 555,399.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,745.92 : 1,000,115.68 = 402,476.64 : x
  2. Step 2: Convert to fraction form
    724,745.92/1,000,115.68 = 402,476.64/x
  3. Step 3: Cross multiply
    724,745.92x = 1,000,115.68 × 402,476.64
  4. Step 4: Simplify right side
    724,745.92x = 402,523,198,497.72
  5. Step 5: Solve for x
    x = 402,523,198,497.72/724,745.92
  6. Step 6: Final answer
    x = 555,399.05

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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.