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Finding the Fourth Proportional to 573,399.27, 791,338.82 and 318,774.15

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Solution

The fourth proportional to 573,399.27, 791,338.82 and 318,774.15 is: 439,934.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    573,399.27 : 791,338.82 = 318,774.15 : x
  2. Step 2: Convert to fraction form
    573,399.27/791,338.82 = 318,774.15/x
  3. Step 3: Cross multiply
    573,399.27x = 791,338.82 × 318,774.15
  4. Step 4: Simplify right side
    573,399.27x = 252,258,358,113.63
  5. Step 5: Solve for x
    x = 252,258,358,113.63/573,399.27
  6. Step 6: Final answer
    x = 439,934.91

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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.