Home / 858,940.74-1,288,148.65-409,424.78

Finding the Fourth Proportional to 858,940.74, 1,288,148.65 and 409,424.78

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Solution

The fourth proportional to 858,940.74, 1,288,148.65 and 409,424.78 is: 614,012.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,940.74 : 1,288,148.65 = 409,424.78 : x
  2. Step 2: Convert to fraction form
    858,940.74/1,288,148.65 = 409,424.78/x
  3. Step 3: Cross multiply
    858,940.74x = 1,288,148.65 × 409,424.78
  4. Step 4: Simplify right side
    858,940.74x = 527,399,977,633.55
  5. Step 5: Solve for x
    x = 527,399,977,633.55/858,940.74
  6. Step 6: Final answer
    x = 614,012.07

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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.