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Finding the Fourth Proportional to 891,773.66, 1,337,661.41 and 418,459.48

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Solution

The fourth proportional to 891,773.66, 1,337,661.41 and 418,459.48 is: 627,689.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    891,773.66 : 1,337,661.41 = 418,459.48 : x
  2. Step 2: Convert to fraction form
    891,773.66/1,337,661.41 = 418,459.48/x
  3. Step 3: Cross multiply
    891,773.66x = 1,337,661.41 × 418,459.48
  4. Step 4: Simplify right side
    891,773.66x = 559,757,092,608.22
  5. Step 5: Solve for x
    x = 559,757,092,608.22/891,773.66
  6. Step 6: Final answer
    x = 627,689.64

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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.