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Finding the Fourth Proportional to 642,262.62, 886,337.15 and 351,901.90

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Solution

The fourth proportional to 642,262.62, 886,337.15 and 351,901.90 is: 485,632.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,262.62 : 886,337.15 = 351,901.90 : x
  2. Step 2: Convert to fraction form
    642,262.62/886,337.15 = 351,901.90/x
  3. Step 3: Cross multiply
    642,262.62x = 886,337.15 × 351,901.90
  4. Step 4: Simplify right side
    642,262.62x = 311,903,727,125.59
  5. Step 5: Solve for x
    x = 311,903,727,125.59/642,262.62
  6. Step 6: Final answer
    x = 485,632.70

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1.5x scale

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.