Home / 717,819.30-990,634.77-395,529.32

Finding the Fourth Proportional to 717,819.30, 990,634.77 and 395,529.32

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Solution

The fourth proportional to 717,819.30, 990,634.77 and 395,529.32 is: 545,854.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,819.30 : 990,634.77 = 395,529.32 : x
  2. Step 2: Convert to fraction form
    717,819.30/990,634.77 = 395,529.32/x
  3. Step 3: Cross multiply
    717,819.30x = 990,634.77 × 395,529.32
  4. Step 4: Simplify right side
    717,819.30x = 391,825,099,423.04
  5. Step 5: Solve for x
    x = 391,825,099,423.04/717,819.30
  6. Step 6: Final answer
    x = 545,854.78

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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.