Home / 858,940.24-1,288,147.90-409,424.28

Finding the Fourth Proportional to 858,940.24, 1,288,147.90 and 409,424.28

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Solution

The fourth proportional to 858,940.24, 1,288,147.90 and 409,424.28 is: 614,011.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,940.24 : 1,288,147.90 = 409,424.28 : x
  2. Step 2: Convert to fraction form
    858,940.24/1,288,147.90 = 409,424.28/x
  3. Step 3: Cross multiply
    858,940.24x = 1,288,147.90 × 409,424.28
  4. Step 4: Simplify right side
    858,940.24x = 527,399,026,491.01
  5. Step 5: Solve for x
    x = 527,399,026,491.01/858,940.24
  6. Step 6: Final answer
    x = 614,011.32

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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.