Home / 989,900.50-1,365,356.96-908,491.18

Finding the Fourth Proportional to 989,900.50, 1,365,356.96 and 908,491.18

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Solution

The fourth proportional to 989,900.50, 1,365,356.96 and 908,491.18 is: 1,253,070.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    989,900.50 : 1,365,356.96 = 908,491.18 : x
  2. Step 2: Convert to fraction form
    989,900.50/1,365,356.96 = 908,491.18/x
  3. Step 3: Cross multiply
    989,900.50x = 1,365,356.96 × 908,491.18
  4. Step 4: Simplify right side
    989,900.50x = 1,240,414,755,711.61
  5. Step 5: Solve for x
    x = 1,240,414,755,711.61/989,900.50
  6. Step 6: Final answer
    x = 1,253,070.14

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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.