Home / 719,108.84-992,363.46-396,821.80

Finding the Fourth Proportional to 719,108.84, 992,363.46 and 396,821.80

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Solution

The fourth proportional to 719,108.84, 992,363.46 and 396,821.80 is: 547,610.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,108.84 : 992,363.46 = 396,821.80 : x
  2. Step 2: Convert to fraction form
    719,108.84/992,363.46 = 396,821.80/x
  3. Step 3: Cross multiply
    719,108.84x = 992,363.46 × 396,821.80
  4. Step 4: Simplify right side
    719,108.84x = 393,791,454,451.43
  5. Step 5: Solve for x
    x = 393,791,454,451.43/719,108.84
  6. Step 6: Final answer
    x = 547,610.37

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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.