Home / 717,925.20-990,734.61-395,635.20

Finding the Fourth Proportional to 717,925.20, 990,734.61 and 395,635.20

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Solution

The fourth proportional to 717,925.20, 990,734.61 and 395,635.20 is: 545,975.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,925.20 : 990,734.61 = 395,635.20 : x
  2. Step 2: Convert to fraction form
    717,925.20/990,734.61 = 395,635.20/x
  3. Step 3: Cross multiply
    717,925.20x = 990,734.61 × 395,635.20
  4. Step 4: Simplify right side
    717,925.20x = 391,969,485,574.27
  5. Step 5: Solve for x
    x = 391,969,485,574.27/717,925.20
  6. Step 6: Final answer
    x = 545,975.38

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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.