Home / 717,811.92-990,624.69-395,521.97

Finding the Fourth Proportional to 717,811.92, 990,624.69 and 395,521.97

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Solution

The fourth proportional to 717,811.92, 990,624.69 and 395,521.97 is: 545,844.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,811.92 : 990,624.69 = 395,521.97 : x
  2. Step 2: Convert to fraction form
    717,811.92/990,624.69 = 395,521.97/x
  3. Step 3: Cross multiply
    717,811.92x = 990,624.69 × 395,521.97
  4. Step 4: Simplify right side
    717,811.92x = 391,813,823,966.32
  5. Step 5: Solve for x
    x = 391,813,823,966.32/717,811.92
  6. Step 6: Final answer
    x = 545,844.69

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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.