Home / 1,275,981.56-1,914,234.78-876,810.32

Finding the Fourth Proportional to 1,275,981.56, 1,914,234.78 and 876,810.32

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Solution

The fourth proportional to 1,275,981.56, 1,914,234.78 and 876,810.32 is: 1,315,395.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,275,981.56 : 1,914,234.78 = 876,810.32 : x
  2. Step 2: Convert to fraction form
    1,275,981.56/1,914,234.78 = 876,810.32/x
  3. Step 3: Cross multiply
    1,275,981.56x = 1,914,234.78 × 876,810.32
  4. Step 4: Simplify right side
    1,275,981.56x = 1,678,420,810,006.93
  5. Step 5: Solve for x
    x = 1,678,420,810,006.93/1,275,981.56
  6. Step 6: Final answer
    x = 1,315,395.82

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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.