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Finding the Fourth Proportional to 552,871.81, 762,987.63 and 311,170.04

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Solution

The fourth proportional to 552,871.81, 762,987.63 and 311,170.04 is: 429,428.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    552,871.81 : 762,987.63 = 311,170.04 : x
  2. Step 2: Convert to fraction form
    552,871.81/762,987.63 = 311,170.04/x
  3. Step 3: Cross multiply
    552,871.81x = 762,987.63 × 311,170.04
  4. Step 4: Simplify right side
    552,871.81x = 237,418,891,559.76
  5. Step 5: Solve for x
    x = 237,418,891,559.76/552,871.81
  6. Step 6: Final answer
    x = 429,428.46

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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.