Home / 717,446.07-990,120.49-395,156.04

Finding the Fourth Proportional to 717,446.07, 990,120.49 and 395,156.04

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Solution

The fourth proportional to 717,446.07, 990,120.49 and 395,156.04 is: 545,340.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,446.07 : 990,120.49 = 395,156.04 : x
  2. Step 2: Convert to fraction form
    717,446.07/990,120.49 = 395,156.04/x
  3. Step 3: Cross multiply
    717,446.07x = 990,120.49 × 395,156.04
  4. Step 4: Simplify right side
    717,446.07x = 391,252,091,951.26
  5. Step 5: Solve for x
    x = 391,252,091,951.26/717,446.07
  6. Step 6: Final answer
    x = 545,340.08

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Double scale
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Similar ratio
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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.