Home / 914,873.95-1,261,780.36-643,839.85

Finding the Fourth Proportional to 914,873.95, 1,261,780.36 and 643,839.85

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Solution

The fourth proportional to 914,873.95, 1,261,780.36 and 643,839.85 is: 887,974.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    914,873.95 : 1,261,780.36 = 643,839.85 : x
  2. Step 2: Convert to fraction form
    914,873.95/1,261,780.36 = 643,839.85/x
  3. Step 3: Cross multiply
    914,873.95x = 1,261,780.36 × 643,839.85
  4. Step 4: Simplify right side
    914,873.95x = 812,384,477,715.35
  5. Step 5: Solve for x
    x = 812,384,477,715.35/914,873.95
  6. Step 6: Final answer
    x = 887,974.22

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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.