Home / 719,406.58-992,781.27-397,116.90

Finding the Fourth Proportional to 719,406.58, 992,781.27 and 397,116.90

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Solution

The fourth proportional to 719,406.58, 992,781.27 and 397,116.90 is: 548,021.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,406.58 : 992,781.27 = 397,116.90 : x
  2. Step 2: Convert to fraction form
    719,406.58/992,781.27 = 397,116.90/x
  3. Step 3: Cross multiply
    719,406.58x = 992,781.27 × 397,116.90
  4. Step 4: Simplify right side
    719,406.58x = 394,250,220,320.46
  5. Step 5: Solve for x
    x = 394,250,220,320.46/719,406.58
  6. Step 6: Final answer
    x = 548,021.43

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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.