Home / 1,247,980.77-1,872,039.20-394,988.72

Finding the Fourth Proportional to 1,247,980.77, 1,872,039.20 and 394,988.72

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Solution

The fourth proportional to 1,247,980.77, 1,872,039.20 and 394,988.72 is: 592,504.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,247,980.77 : 1,872,039.20 = 394,988.72 : x
  2. Step 2: Convert to fraction form
    1,247,980.77/1,872,039.20 = 394,988.72/x
  3. Step 3: Cross multiply
    1,247,980.77x = 1,872,039.20 × 394,988.72
  4. Step 4: Simplify right side
    1,247,980.77x = 739,434,356,062.69
  5. Step 5: Solve for x
    x = 739,434,356,062.69/1,247,980.77
  6. Step 6: Final answer
    x = 592,504.61

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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.