Home / 729,469.16-1,006,835.38-427,760.36

Finding the Fourth Proportional to 729,469.16, 1,006,835.38 and 427,760.36

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Solution

The fourth proportional to 729,469.16, 1,006,835.38 and 427,760.36 is: 590,407.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    729,469.16 : 1,006,835.38 = 427,760.36 : x
  2. Step 2: Convert to fraction form
    729,469.16/1,006,835.38 = 427,760.36/x
  3. Step 3: Cross multiply
    729,469.16x = 1,006,835.38 × 427,760.36
  4. Step 4: Simplify right side
    729,469.16x = 430,684,264,609.54
  5. Step 5: Solve for x
    x = 430,684,264,609.54/729,469.16
  6. Step 6: Final answer
    x = 590,407.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.