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Finding the Fourth Proportional to 665,755.56, 918,742.68 and 363,949.56

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Solution

The fourth proportional to 665,755.56, 918,742.68 and 363,949.56 is: 502,250.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,755.56 : 918,742.68 = 363,949.56 : x
  2. Step 2: Convert to fraction form
    665,755.56/918,742.68 = 363,949.56/x
  3. Step 3: Cross multiply
    665,755.56x = 918,742.68 × 363,949.56
  4. Step 4: Simplify right side
    665,755.56x = 334,375,994,139.22
  5. Step 5: Solve for x
    x = 334,375,994,139.22/665,755.56
  6. Step 6: Final answer
    x = 502,250.40

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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.