Home / 657,381.78-986,632.20-258,301.62

Finding the Fourth Proportional to 657,381.78, 986,632.20 and 258,301.62

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Solution

The fourth proportional to 657,381.78, 986,632.20 and 258,301.62 is: 387,672.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,381.78 : 986,632.20 = 258,301.62 : x
  2. Step 2: Convert to fraction form
    657,381.78/986,632.20 = 258,301.62/x
  3. Step 3: Cross multiply
    657,381.78x = 986,632.20 × 258,301.62
  4. Step 4: Simplify right side
    657,381.78x = 254,848,695,604.16
  5. Step 5: Solve for x
    x = 254,848,695,604.16/657,381.78
  6. Step 6: Final answer
    x = 387,672.28

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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.