Home / 431,424.30-647,136.45-282,125.10

Finding the Fourth Proportional to 431,424.30, 647,136.45 and 282,125.10

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Solution

The fourth proportional to 431,424.30, 647,136.45 and 282,125.10 is: 423,187.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,424.30 : 647,136.45 = 282,125.10 : x
  2. Step 2: Convert to fraction form
    431,424.30/647,136.45 = 282,125.10/x
  3. Step 3: Cross multiply
    431,424.30x = 647,136.45 × 282,125.10
  4. Step 4: Simplify right side
    431,424.30x = 182,573,435,669.90
  5. Step 5: Solve for x
    x = 182,573,435,669.90/431,424.30
  6. Step 6: Final answer
    x = 423,187.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.