Home / 719,261.38-992,575.80-396,971.47

Finding the Fourth Proportional to 719,261.38, 992,575.80 and 396,971.47

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Solution

The fourth proportional to 719,261.38, 992,575.80 and 396,971.47 is: 547,817.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,261.38 : 992,575.80 = 396,971.47 : x
  2. Step 2: Convert to fraction form
    719,261.38/992,575.80 = 396,971.47/x
  3. Step 3: Cross multiply
    719,261.38x = 992,575.80 × 396,971.47
  4. Step 4: Simplify right side
    719,261.38x = 394,024,274,412.43
  5. Step 5: Solve for x
    x = 394,024,274,412.43/719,261.38
  6. Step 6: Final answer
    x = 547,817.92

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Double scale
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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.