Home / 718,905.96-992,145.24-396,678.24

Finding the Fourth Proportional to 718,905.96, 992,145.24 and 396,678.24

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Solution

The fourth proportional to 718,905.96, 992,145.24 and 396,678.24 is: 547,446.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,905.96 : 992,145.24 = 396,678.24 : x
  2. Step 2: Convert to fraction form
    718,905.96/992,145.24 = 396,678.24/x
  3. Step 3: Cross multiply
    718,905.96x = 992,145.24 × 396,678.24
  4. Step 4: Simplify right side
    718,905.96x = 393,562,427,627.58
  5. Step 5: Solve for x
    x = 393,562,427,627.58/718,905.96
  6. Step 6: Final answer
    x = 547,446.33

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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.