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Finding the Fourth Proportional to 638,276.34, 880,816.74 and 351,796.74

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Solution

The fourth proportional to 638,276.34, 880,816.74 and 351,796.74 is: 485,476.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,276.34 : 880,816.74 = 351,796.74 : x
  2. Step 2: Convert to fraction form
    638,276.34/880,816.74 = 351,796.74/x
  3. Step 3: Cross multiply
    638,276.34x = 880,816.74 × 351,796.74
  4. Step 4: Simplify right side
    638,276.34x = 309,868,457,669.43
  5. Step 5: Solve for x
    x = 309,868,457,669.43/638,276.34
  6. Step 6: Final answer
    x = 485,476.96

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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.