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Finding the Fourth Proportional to 1,203,932, 1,661,415 and 660,098

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Solution

The fourth proportional to 1,203,932, 1,661,415 and 660,098 is: 910,929.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,203,932 : 1,661,415 = 660,098 : x
  2. Step 2: Convert to fraction form
    1,203,932/1,661,415 = 660,098/x
  3. Step 3: Cross multiply
    1,203,932x = 1,661,415 × 660,098
  4. Step 4: Simplify right side
    1,203,932x = 1,096,696,718,670
  5. Step 5: Solve for x
    x = 1,096,696,718,670/1,203,932
  6. Step 6: Final answer
    x = 910,929.12

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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.