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Finding the Fourth Proportional to 889,169, 1,227,053.28 and 486,761

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Solution

The fourth proportional to 889,169, 1,227,053.28 and 486,761 is: 671,730.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    889,169 : 1,227,053.28 = 486,761 : x
  2. Step 2: Convert to fraction form
    889,169/1,227,053.28 = 486,761/x
  3. Step 3: Cross multiply
    889,169x = 1,227,053.28 × 486,761
  4. Step 4: Simplify right side
    889,169x = 597,281,681,626.08
  5. Step 5: Solve for x
    x = 597,281,681,626.08/889,169
  6. Step 6: Final answer
    x = 671,730.21

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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.