Home / 718,725.24-991,823.45-396,428.41

Finding the Fourth Proportional to 718,725.24, 991,823.45 and 396,428.41

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Solution

The fourth proportional to 718,725.24, 991,823.45 and 396,428.41 is: 547,061.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,725.24 : 991,823.45 = 396,428.41 : x
  2. Step 2: Convert to fraction form
    718,725.24/991,823.45 = 396,428.41/x
  3. Step 3: Cross multiply
    718,725.24x = 991,823.45 × 396,428.41
  4. Step 4: Simplify right side
    718,725.24x = 393,186,993,284.22
  5. Step 5: Solve for x
    x = 393,186,993,284.22/718,725.24
  6. Step 6: Final answer
    x = 547,061.62

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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.