Home / 718,936.80-992,136.24-396,646.88

Finding the Fourth Proportional to 718,936.80, 992,136.24 and 396,646.88

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Solution

The fourth proportional to 718,936.80, 992,136.24 and 396,646.88 is: 547,374.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,936.80 : 992,136.24 = 396,646.88 : x
  2. Step 2: Convert to fraction form
    718,936.80/992,136.24 = 396,646.88/x
  3. Step 3: Cross multiply
    718,936.80x = 992,136.24 × 396,646.88
  4. Step 4: Simplify right side
    718,936.80x = 393,527,744,130.93
  5. Step 5: Solve for x
    x = 393,527,744,130.93/718,936.80
  6. Step 6: Final answer
    x = 547,374.60

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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.