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Finding the Fourth Proportional to 665,754.50, 918,741.22 and 363,948.50

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Solution

The fourth proportional to 665,754.50, 918,741.22 and 363,948.50 is: 502,248.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,754.50 : 918,741.22 = 363,948.50 : x
  2. Step 2: Convert to fraction form
    665,754.50/918,741.22 = 363,948.50/x
  3. Step 3: Cross multiply
    665,754.50x = 918,741.22 × 363,948.50
  4. Step 4: Simplify right side
    665,754.50x = 334,374,488,907.17
  5. Step 5: Solve for x
    x = 334,374,488,907.17/665,754.50
  6. Step 6: Final answer
    x = 502,248.94

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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.