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Finding the Fourth Proportional to 876,743.44, 1,209,894 and 489,564.82

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Solution

The fourth proportional to 876,743.44, 1,209,894 and 489,564.82 is: 675,592.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    876,743.44 : 1,209,894 = 489,564.82 : x
  2. Step 2: Convert to fraction form
    876,743.44/1,209,894 = 489,564.82/x
  3. Step 3: Cross multiply
    876,743.44x = 1,209,894 × 489,564.82
  4. Step 4: Simplify right side
    876,743.44x = 592,321,538,329.08
  5. Step 5: Solve for x
    x = 592,321,538,329.08/876,743.44
  6. Step 6: Final answer
    x = 675,592.78

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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.