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Finding the Fourth Proportional to 638,184.48, 880,700.40 and 351,714.96

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Solution

The fourth proportional to 638,184.48, 880,700.40 and 351,714.96 is: 485,369.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,184.48 : 880,700.40 = 351,714.96 : x
  2. Step 2: Convert to fraction form
    638,184.48/880,700.40 = 351,714.96/x
  3. Step 3: Cross multiply
    638,184.48x = 880,700.40 × 351,714.96
  4. Step 4: Simplify right side
    638,184.48x = 309,755,505,957.98
  5. Step 5: Solve for x
    x = 309,755,505,957.98/638,184.48
  6. Step 6: Final answer
    x = 485,369.85

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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.