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Finding the Fourth Proportional to 630,382.20, 869,910.18 and 343,902.22

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Solution

The fourth proportional to 630,382.20, 869,910.18 and 343,902.22 is: 474,575.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,382.20 : 869,910.18 = 343,902.22 : x
  2. Step 2: Convert to fraction form
    630,382.20/869,910.18 = 343,902.22/x
  3. Step 3: Cross multiply
    630,382.20x = 869,910.18 × 343,902.22
  4. Step 4: Simplify right side
    630,382.20x = 299,164,042,102.60
  5. Step 5: Solve for x
    x = 299,164,042,102.60/630,382.20
  6. Step 6: Final answer
    x = 474,575.65

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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.