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Finding the Fourth Proportional to 723,665.08, 998,702.40 and 401,374.96

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Solution

The fourth proportional to 723,665.08, 998,702.40 and 401,374.96 is: 553,922.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    723,665.08 : 998,702.40 = 401,374.96 : x
  2. Step 2: Convert to fraction form
    723,665.08/998,702.40 = 401,374.96/x
  3. Step 3: Cross multiply
    723,665.08x = 998,702.40 × 401,374.96
  4. Step 4: Simplify right side
    723,665.08x = 400,854,135,851.90
  5. Step 5: Solve for x
    x = 400,854,135,851.90/723,665.08
  6. Step 6: Final answer
    x = 553,922.18

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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.