Home / 1,325,780.64-1,829,491.14-781,791.72

Finding the Fourth Proportional to 1,325,780.64, 1,829,491.14 and 781,791.72

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Solution

The fourth proportional to 1,325,780.64, 1,829,491.14 and 781,791.72 is: 1,078,821.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,325,780.64 : 1,829,491.14 = 781,791.72 : x
  2. Step 2: Convert to fraction form
    1,325,780.64/1,829,491.14 = 781,791.72/x
  3. Step 3: Cross multiply
    1,325,780.64x = 1,829,491.14 × 781,791.72
  4. Step 4: Simplify right side
    1,325,780.64x = 1,430,281,025,065.36
  5. Step 5: Solve for x
    x = 1,430,281,025,065.36/1,325,780.64
  6. Step 6: Final answer
    x = 1,078,821.78

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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.