Home / 4,128,018.80-6,192,028.20-1,287,761.90

Finding the Fourth Proportional to 4,128,018.80, 6,192,028.20 and 1,287,761.90

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Solution

The fourth proportional to 4,128,018.80, 6,192,028.20 and 1,287,761.90 is: 1,931,642.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,128,018.80 : 6,192,028.20 = 1,287,761.90 : x
  2. Step 2: Convert to fraction form
    4,128,018.80/6,192,028.20 = 1,287,761.90/x
  3. Step 3: Cross multiply
    4,128,018.80x = 6,192,028.20 × 1,287,761.90
  4. Step 4: Simplify right side
    4,128,018.80x = 7,973,857,999,685.58
  5. Step 5: Solve for x
    x = 7,973,857,999,685.58/4,128,018.80
  6. Step 6: Final answer
    x = 1,931,642.85

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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.