Home / 717,962.87-990,788.76-395,672.97

Finding the Fourth Proportional to 717,962.87, 990,788.76 and 395,672.97

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Solution

The fourth proportional to 717,962.87, 990,788.76 and 395,672.97 is: 546,028.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,962.87 : 990,788.76 = 395,672.97 : x
  2. Step 2: Convert to fraction form
    717,962.87/990,788.76 = 395,672.97/x
  3. Step 3: Cross multiply
    717,962.87x = 990,788.76 × 395,672.97
  4. Step 4: Simplify right side
    717,962.87x = 392,028,331,311.82
  5. Step 5: Solve for x
    x = 392,028,331,311.82/717,962.87
  6. Step 6: Final answer
    x = 546,028.70

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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.