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Finding the Fourth Proportional to 1,866,589.41, 2,799,905.60 and 787,284.41

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Solution

The fourth proportional to 1,866,589.41, 2,799,905.60 and 787,284.41 is: 1,180,935.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,866,589.41 : 2,799,905.60 = 787,284.41 : x
  2. Step 2: Convert to fraction form
    1,866,589.41/2,799,905.60 = 787,284.41/x
  3. Step 3: Cross multiply
    1,866,589.41x = 2,799,905.60 × 787,284.41
  4. Step 4: Simplify right side
    1,866,589.41x = 2,204,322,016,320.38
  5. Step 5: Solve for x
    x = 2,204,322,016,320.38/1,866,589.41
  6. Step 6: Final answer
    x = 1,180,935.67

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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.