Home / 717,536.16-990,195.30-395,238.78

Finding the Fourth Proportional to 717,536.16, 990,195.30 and 395,238.78

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Solution

The fourth proportional to 717,536.16, 990,195.30 and 395,238.78 is: 545,426.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,536.16 : 990,195.30 = 395,238.78 : x
  2. Step 2: Convert to fraction form
    717,536.16/990,195.30 = 395,238.78/x
  3. Step 3: Cross multiply
    717,536.16x = 990,195.30 × 395,238.78
  4. Step 4: Simplify right side
    717,536.16x = 391,363,582,333.73
  5. Step 5: Solve for x
    x = 391,363,582,333.73/717,536.16
  6. Step 6: Final answer
    x = 545,426.98

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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.