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Finding the Fourth Proportional to 723,543.90, 998,493.27 and 401,283.78

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Solution

The fourth proportional to 723,543.90, 998,493.27 and 401,283.78 is: 553,773.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    723,543.90 : 998,493.27 = 401,283.78 : x
  2. Step 2: Convert to fraction form
    723,543.90/998,493.27 = 401,283.78/x
  3. Step 3: Cross multiply
    723,543.90x = 998,493.27 × 401,283.78
  4. Step 4: Simplify right side
    723,543.90x = 400,679,153,690.16
  5. Step 5: Solve for x
    x = 400,679,153,690.16/723,543.90
  6. Step 6: Final answer
    x = 553,773.11

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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.