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Finding the Fourth Proportional to 723,618.64, 998,641.76 and 401,342.32

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Solution

The fourth proportional to 723,618.64, 998,641.76 and 401,342.32 is: 553,879.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    723,618.64 : 998,641.76 = 401,342.32 : x
  2. Step 2: Convert to fraction form
    723,618.64/998,641.76 = 401,342.32/x
  3. Step 3: Cross multiply
    723,618.64x = 998,641.76 × 401,342.32
  4. Step 4: Simplify right side
    723,618.64x = 400,797,200,807.28
  5. Step 5: Solve for x
    x = 400,797,200,807.28/723,618.64
  6. Step 6: Final answer
    x = 553,879.04

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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.