Home / 718,545.98-991,579.65-396,285.86

Finding the Fourth Proportional to 718,545.98, 991,579.65 and 396,285.86

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Solution

The fourth proportional to 718,545.98, 991,579.65 and 396,285.86 is: 546,866.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,545.98 : 991,579.65 = 396,285.86 : x
  2. Step 2: Convert to fraction form
    718,545.98/991,579.65 = 396,285.86/x
  3. Step 3: Cross multiply
    718,545.98x = 991,579.65 × 396,285.86
  4. Step 4: Simplify right side
    718,545.98x = 392,948,994,358.75
  5. Step 5: Solve for x
    x = 392,948,994,358.75/718,545.98
  6. Step 6: Final answer
    x = 546,866.87

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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.