Home / 1,107,148.40-1,659,685.80-867,129.20

Finding the Fourth Proportional to 1,107,148.40, 1,659,685.80 and 867,129.20

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Solution

The fourth proportional to 1,107,148.40, 1,659,685.80 and 867,129.20 is: 1,299,881.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,107,148.40 : 1,659,685.80 = 867,129.20 : x
  2. Step 2: Convert to fraction form
    1,107,148.40/1,659,685.80 = 867,129.20/x
  3. Step 3: Cross multiply
    1,107,148.40x = 1,659,685.80 × 867,129.20
  4. Step 4: Simplify right side
    1,107,148.40x = 1,439,162,020,005.36
  5. Step 5: Solve for x
    x = 1,439,162,020,005.36/1,107,148.40
  6. Step 6: Final answer
    x = 1,299,881.77

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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.