Home / 726,900.10-1,090,998.15-427,005.70

Finding the Fourth Proportional to 726,900.10, 1,090,998.15 and 427,005.70

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Solution

The fourth proportional to 726,900.10, 1,090,998.15 and 427,005.70 is: 640,889.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    726,900.10 : 1,090,998.15 = 427,005.70 : x
  2. Step 2: Convert to fraction form
    726,900.10/1,090,998.15 = 427,005.70/x
  3. Step 3: Cross multiply
    726,900.10x = 1,090,998.15 × 427,005.70
  4. Step 4: Simplify right side
    726,900.10x = 465,862,428,739.46
  5. Step 5: Solve for x
    x = 465,862,428,739.46/726,900.10
  6. Step 6: Final answer
    x = 640,889.21

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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.