Home / 717,968.25-990,791.10-395,678.61

Finding the Fourth Proportional to 717,968.25, 990,791.10 and 395,678.61

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Solution

The fourth proportional to 717,968.25, 990,791.10 and 395,678.61 is: 546,033.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,968.25 : 990,791.10 = 395,678.61 : x
  2. Step 2: Convert to fraction form
    717,968.25/990,791.10 = 395,678.61/x
  3. Step 3: Cross multiply
    717,968.25x = 990,791.10 × 395,678.61
  4. Step 4: Simplify right side
    717,968.25x = 392,034,845,248.37
  5. Step 5: Solve for x
    x = 392,034,845,248.37/717,968.25
  6. Step 6: Final answer
    x = 546,033.68

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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.