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Finding the Fourth Proportional to 889,149, 1,227,025.62 and 486,741

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Solution

The fourth proportional to 889,149, 1,227,025.62 and 486,741 is: 671,702.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    889,149 : 1,227,025.62 = 486,741 : x
  2. Step 2: Convert to fraction form
    889,149/1,227,025.62 = 486,741/x
  3. Step 3: Cross multiply
    889,149x = 1,227,025.62 × 486,741
  4. Step 4: Simplify right side
    889,149x = 597,243,677,304.42
  5. Step 5: Solve for x
    x = 597,243,677,304.42/889,149
  6. Step 6: Final answer
    x = 671,702.58

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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.