Home / 423,960.24-634,555.80-311,610.72

Finding the Fourth Proportional to 423,960.24, 634,555.80 and 311,610.72

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Solution

The fourth proportional to 423,960.24, 634,555.80 and 311,610.72 is: 466,398.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,960.24 : 634,555.80 = 311,610.72 : x
  2. Step 2: Convert to fraction form
    423,960.24/634,555.80 = 311,610.72/x
  3. Step 3: Cross multiply
    423,960.24x = 634,555.80 × 311,610.72
  4. Step 4: Simplify right side
    423,960.24x = 197,734,389,718.18
  5. Step 5: Solve for x
    x = 197,734,389,718.18/423,960.24
  6. Step 6: Final answer
    x = 466,398.43

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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.