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Finding the Fourth Proportional to 666,877.88, 920,291.52 and 365,071.88

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Solution

The fourth proportional to 666,877.88, 920,291.52 and 365,071.88 is: 503,799.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,877.88 : 920,291.52 = 365,071.88 : x
  2. Step 2: Convert to fraction form
    666,877.88/920,291.52 = 365,071.88/x
  3. Step 3: Cross multiply
    666,877.88x = 920,291.52 × 365,071.88
  4. Step 4: Simplify right side
    666,877.88x = 335,972,550,753
  5. Step 5: Solve for x
    x = 335,972,550,753/666,877.88
  6. Step 6: Final answer
    x = 503,799.22

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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.