Home / 726,265.16-1,002,175.56-420,280.76

Finding the Fourth Proportional to 726,265.16, 1,002,175.56 and 420,280.76

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Solution

The fourth proportional to 726,265.16, 1,002,175.56 and 420,280.76 is: 579,946.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    726,265.16 : 1,002,175.56 = 420,280.76 : x
  2. Step 2: Convert to fraction form
    726,265.16/1,002,175.56 = 420,280.76/x
  3. Step 3: Cross multiply
    726,265.16x = 1,002,175.56 × 420,280.76
  4. Step 4: Simplify right side
    726,265.16x = 421,195,106,010.23
  5. Step 5: Solve for x
    x = 421,195,106,010.23/726,265.16
  6. Step 6: Final answer
    x = 579,946.73

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Double scale
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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.