Home / 743,117.50-1,025,565.39-420,884.92

Finding the Fourth Proportional to 743,117.50, 1,025,565.39 and 420,884.92

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Solution

The fourth proportional to 743,117.50, 1,025,565.39 and 420,884.92 is: 580,857.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    743,117.50 : 1,025,565.39 = 420,884.92 : x
  2. Step 2: Convert to fraction form
    743,117.50/1,025,565.39 = 420,884.92/x
  3. Step 3: Cross multiply
    743,117.50x = 1,025,565.39 × 420,884.92
  4. Step 4: Simplify right side
    743,117.50x = 431,645,001,997.09
  5. Step 5: Solve for x
    x = 431,645,001,997.09/743,117.50
  6. Step 6: Final answer
    x = 580,857.00

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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.