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Finding the Fourth Proportional to 616,738.80, 924,670.80 and 279,940.80

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Solution

The fourth proportional to 616,738.80, 924,670.80 and 279,940.80 is: 419,712.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    616,738.80 : 924,670.80 = 279,940.80 : x
  2. Step 2: Convert to fraction form
    616,738.80/924,670.80 = 279,940.80/x
  3. Step 3: Cross multiply
    616,738.80x = 924,670.80 × 279,940.80
  4. Step 4: Simplify right side
    616,738.80x = 258,853,083,488.64
  5. Step 5: Solve for x
    x = 258,853,083,488.64/616,738.80
  6. Step 6: Final answer
    x = 419,712.66

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.