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Finding the Fourth Proportional to 986,749.68, 1,472,984.52 and 867,178.56

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Solution

The fourth proportional to 986,749.68, 1,472,984.52 and 867,178.56 is: 1,294,493.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    986,749.68 : 1,472,984.52 = 867,178.56 : x
  2. Step 2: Convert to fraction form
    986,749.68/1,472,984.52 = 867,178.56/x
  3. Step 3: Cross multiply
    986,749.68x = 1,472,984.52 × 867,178.56
  4. Step 4: Simplify right side
    986,749.68x = 1,277,340,594,955.89
  5. Step 5: Solve for x
    x = 1,277,340,594,955.89/986,749.68
  6. Step 6: Final answer
    x = 1,294,493.04

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.