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Finding the Fourth Proportional to 717,951.16, 990,793.34 and 395,682

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Solution

The fourth proportional to 717,951.16, 990,793.34 and 395,682 is: 546,052.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,951.16 : 990,793.34 = 395,682 : x
  2. Step 2: Convert to fraction form
    717,951.16/990,793.34 = 395,682/x
  3. Step 3: Cross multiply
    717,951.16x = 990,793.34 × 395,682
  4. Step 4: Simplify right side
    717,951.16x = 392,039,090,357.88
  5. Step 5: Solve for x
    x = 392,039,090,357.88/717,951.16
  6. Step 6: Final answer
    x = 546,052.59

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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.