Home / 1,386,512.70-2,079,769.05-487,947.30

Finding the Fourth Proportional to 1,386,512.70, 2,079,769.05 and 487,947.30

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Solution

The fourth proportional to 1,386,512.70, 2,079,769.05 and 487,947.30 is: 731,920.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,386,512.70 : 2,079,769.05 = 487,947.30 : x
  2. Step 2: Convert to fraction form
    1,386,512.70/2,079,769.05 = 487,947.30/x
  3. Step 3: Cross multiply
    1,386,512.70x = 2,079,769.05 × 487,947.30
  4. Step 4: Simplify right side
    1,386,512.70x = 1,014,817,692,571.07
  5. Step 5: Solve for x
    x = 1,014,817,692,571.07/1,386,512.70
  6. Step 6: Final answer
    x = 731,920.95

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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.