Home / 718,542.48-991,574.82-396,282.36

Finding the Fourth Proportional to 718,542.48, 991,574.82 and 396,282.36

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Solution

The fourth proportional to 718,542.48, 991,574.82 and 396,282.36 is: 546,862.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,542.48 : 991,574.82 = 396,282.36 : x
  2. Step 2: Convert to fraction form
    718,542.48/991,574.82 = 396,282.36/x
  3. Step 3: Cross multiply
    718,542.48x = 991,574.82 × 396,282.36
  4. Step 4: Simplify right side
    718,542.48x = 392,943,609,786.18
  5. Step 5: Solve for x
    x = 392,943,609,786.18/718,542.48
  6. Step 6: Final answer
    x = 546,862.04

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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.