Home / 1,191,780.11-1,787,780.33-338,869.55

Finding the Fourth Proportional to 1,191,780.11, 1,787,780.33 and 338,869.55

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Solution

The fourth proportional to 1,191,780.11, 1,787,780.33 and 338,869.55 is: 508,335.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,191,780.11 : 1,787,780.33 = 338,869.55 : x
  2. Step 2: Convert to fraction form
    1,191,780.11/1,787,780.33 = 338,869.55/x
  3. Step 3: Cross multiply
    1,191,780.11x = 1,787,780.33 × 338,869.55
  4. Step 4: Simplify right side
    1,191,780.11x = 605,824,315,925.95
  5. Step 5: Solve for x
    x = 605,824,315,925.95/1,191,780.11
  6. Step 6: Final answer
    x = 508,335.65

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.