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Finding the Fourth Proportional to 680,512.16, 937,534.56 and 489,194.48

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Solution

The fourth proportional to 680,512.16, 937,534.56 and 489,194.48 is: 673,958.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,512.16 : 937,534.56 = 489,194.48 : x
  2. Step 2: Convert to fraction form
    680,512.16/937,534.56 = 489,194.48/x
  3. Step 3: Cross multiply
    680,512.16x = 937,534.56 × 489,194.48
  4. Step 4: Simplify right side
    680,512.16x = 458,636,731,561.23
  5. Step 5: Solve for x
    x = 458,636,731,561.23/680,512.16
  6. Step 6: Final answer
    x = 673,958.17

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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.