Home / 642,546.62-886,737.21-387,848.06

Finding the Fourth Proportional to 642,546.62, 886,737.21 and 387,848.06

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Solution

The fourth proportional to 642,546.62, 886,737.21 and 387,848.06 is: 535,244.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,546.62 : 886,737.21 = 387,848.06 : x
  2. Step 2: Convert to fraction form
    642,546.62/886,737.21 = 387,848.06/x
  3. Step 3: Cross multiply
    642,546.62x = 886,737.21 × 387,848.06
  4. Step 4: Simplify right side
    642,546.62x = 343,919,306,628.31
  5. Step 5: Solve for x
    x = 343,919,306,628.31/642,546.62
  6. Step 6: Final answer
    x = 535,244.13

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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.