Home / 642,000.90-963,116.55-268,061.70

Finding the Fourth Proportional to 642,000.90, 963,116.55 and 268,061.70

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Solution

The fourth proportional to 642,000.90, 963,116.55 and 268,061.70 is: 402,140.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,000.90 : 963,116.55 = 268,061.70 : x
  2. Step 2: Convert to fraction form
    642,000.90/963,116.55 = 268,061.70/x
  3. Step 3: Cross multiply
    642,000.90x = 963,116.55 × 268,061.70
  4. Step 4: Simplify right side
    642,000.90x = 258,174,659,691.14
  5. Step 5: Solve for x
    x = 258,174,659,691.14/642,000.90
  6. Step 6: Final answer
    x = 402,140.65

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1.5x scale

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.