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Finding the Fourth Proportional to 573,435.56, 791,368.08 and 318,791

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Solution

The fourth proportional to 573,435.56, 791,368.08 and 318,791 is: 439,946.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    573,435.56 : 791,368.08 = 318,791 : x
  2. Step 2: Convert to fraction form
    573,435.56/791,368.08 = 318,791/x
  3. Step 3: Cross multiply
    573,435.56x = 791,368.08 × 318,791
  4. Step 4: Simplify right side
    573,435.56x = 252,281,021,591.28
  5. Step 5: Solve for x
    x = 252,281,021,591.28/573,435.56
  6. Step 6: Final answer
    x = 439,946.59

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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.