Home / 465,707.89-642,736.31-284,381.66

Finding the Fourth Proportional to 465,707.89, 642,736.31 and 284,381.66

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Solution

The fourth proportional to 465,707.89, 642,736.31 and 284,381.66 is: 392,482.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    465,707.89 : 642,736.31 = 284,381.66 : x
  2. Step 2: Convert to fraction form
    465,707.89/642,736.31 = 284,381.66/x
  3. Step 3: Cross multiply
    465,707.89x = 642,736.31 × 284,381.66
  4. Step 4: Simplify right side
    465,707.89x = 182,782,418,780.08
  5. Step 5: Solve for x
    x = 182,782,418,780.08/465,707.89
  6. Step 6: Final answer
    x = 392,482.98

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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.