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Finding the Fourth Proportional to 723,424, 998,337.28 and 401,147.52

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Solution

The fourth proportional to 723,424, 998,337.28 and 401,147.52 is: 553,590.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    723,424 : 998,337.28 = 401,147.52 : x
  2. Step 2: Convert to fraction form
    723,424/998,337.28 = 401,147.52/x
  3. Step 3: Cross multiply
    723,424x = 998,337.28 × 401,147.52
  4. Step 4: Simplify right side
    723,424x = 400,480,523,995.55
  5. Step 5: Solve for x
    x = 400,480,523,995.55/723,424
  6. Step 6: Final answer
    x = 553,590.32

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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.