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Finding the Fourth Proportional to 807,266, 1,114,134 and 521,616.80

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Solution

The fourth proportional to 807,266, 1,114,134 and 521,616.80 is: 719,900.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    807,266 : 1,114,134 = 521,616.80 : x
  2. Step 2: Convert to fraction form
    807,266/1,114,134 = 521,616.80/x
  3. Step 3: Cross multiply
    807,266x = 1,114,134 × 521,616.80
  4. Step 4: Simplify right side
    807,266x = 581,151,011,851.20
  5. Step 5: Solve for x
    x = 581,151,011,851.20/807,266
  6. Step 6: Final answer
    x = 719,900.27

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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.