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Finding the Fourth Proportional to 572,644.49, 858,672.90 and 302,918.21

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Solution

The fourth proportional to 572,644.49, 858,672.90 and 302,918.21 is: 454,221.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,644.49 : 858,672.90 = 302,918.21 : x
  2. Step 2: Convert to fraction form
    572,644.49/858,672.90 = 302,918.21/x
  3. Step 3: Cross multiply
    572,644.49x = 858,672.90 × 302,918.21
  4. Step 4: Simplify right side
    572,644.49x = 260,107,656,770.17
  5. Step 5: Solve for x
    x = 260,107,656,770.17/572,644.49
  6. Step 6: Final answer
    x = 454,221.88

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.