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Finding the Fourth Proportional to 982,865.09, 1,356,772.32 and 660,762

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Solution

The fourth proportional to 982,865.09, 1,356,772.32 and 660,762 is: 912,132.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    982,865.09 : 1,356,772.32 = 660,762 : x
  2. Step 2: Convert to fraction form
    982,865.09/1,356,772.32 = 660,762/x
  3. Step 3: Cross multiply
    982,865.09x = 1,356,772.32 × 660,762
  4. Step 4: Simplify right side
    982,865.09x = 896,503,591,707.84
  5. Step 5: Solve for x
    x = 896,503,591,707.84/982,865.09
  6. Step 6: Final answer
    x = 912,132.91

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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.