Home / 719,077.38-992,325.66-396,787.32

Finding the Fourth Proportional to 719,077.38, 992,325.66 and 396,787.32

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Solution

The fourth proportional to 719,077.38, 992,325.66 and 396,787.32 is: 547,565.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,077.38 : 992,325.66 = 396,787.32 : x
  2. Step 2: Convert to fraction form
    719,077.38/992,325.66 = 396,787.32/x
  3. Step 3: Cross multiply
    719,077.38x = 992,325.66 × 396,787.32
  4. Step 4: Simplify right side
    719,077.38x = 393,742,239,198.63
  5. Step 5: Solve for x
    x = 393,742,239,198.63/719,077.38
  6. Step 6: Final answer
    x = 547,565.88

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Half scale
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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.