Home / 667,731.12-921,464.28-365,918.64

Finding the Fourth Proportional to 667,731.12, 921,464.28 and 365,918.64

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Solution

The fourth proportional to 667,731.12, 921,464.28 and 365,918.64 is: 504,965.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,731.12 : 921,464.28 = 365,918.64 : x
  2. Step 2: Convert to fraction form
    667,731.12/921,464.28 = 365,918.64/x
  3. Step 3: Cross multiply
    667,731.12x = 921,464.28 × 365,918.64
  4. Step 4: Simplify right side
    667,731.12x = 337,180,956,146.18
  5. Step 5: Solve for x
    x = 337,180,956,146.18/667,731.12
  6. Step 6: Final answer
    x = 504,965.17

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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.