Home / 642,003.90-963,121.05-268,064.70

Finding the Fourth Proportional to 642,003.90, 963,121.05 and 268,064.70

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Solution

The fourth proportional to 642,003.90, 963,121.05 and 268,064.70 is: 402,145.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,003.90 : 963,121.05 = 268,064.70 : x
  2. Step 2: Convert to fraction form
    642,003.90/963,121.05 = 268,064.70/x
  3. Step 3: Cross multiply
    642,003.90x = 963,121.05 × 268,064.70
  4. Step 4: Simplify right side
    642,003.90x = 258,178,755,331.94
  5. Step 5: Solve for x
    x = 258,178,755,331.94/642,003.90
  6. Step 6: Final answer
    x = 402,145.15

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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.