Home / 719,103.66-992,318.43-396,816.30

Finding the Fourth Proportional to 719,103.66, 992,318.43 and 396,816.30

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Solution

The fourth proportional to 719,103.66, 992,318.43 and 396,816.30 is: 547,581.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,103.66 : 992,318.43 = 396,816.30 : x
  2. Step 2: Convert to fraction form
    719,103.66/992,318.43 = 396,816.30/x
  3. Step 3: Cross multiply
    719,103.66x = 992,318.43 × 396,816.30
  4. Step 4: Simplify right side
    719,103.66x = 393,768,127,814.41
  5. Step 5: Solve for x
    x = 393,768,127,814.41/719,103.66
  6. Step 6: Final answer
    x = 547,581.87

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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.