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Finding the Fourth Proportional to 572,299.20, 789,773.76 and 317,643.84

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Solution

The fourth proportional to 572,299.20, 789,773.76 and 317,643.84 is: 438,348.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,299.20 : 789,773.76 = 317,643.84 : x
  2. Step 2: Convert to fraction form
    572,299.20/789,773.76 = 317,643.84/x
  3. Step 3: Cross multiply
    572,299.20x = 789,773.76 × 317,643.84
  4. Step 4: Simplify right side
    572,299.20x = 250,866,769,857.64
  5. Step 5: Solve for x
    x = 250,866,769,857.64/572,299.20
  6. Step 6: Final answer
    x = 438,348.98

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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.