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Finding the Fourth Proportional to 638,059.60, 880,561.48 and 351,579.62

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Solution

The fourth proportional to 638,059.60, 880,561.48 and 351,579.62 is: 485,201.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,059.60 : 880,561.48 = 351,579.62 : x
  2. Step 2: Convert to fraction form
    638,059.60/880,561.48 = 351,579.62/x
  3. Step 3: Cross multiply
    638,059.60x = 880,561.48 × 351,579.62
  4. Step 4: Simplify right side
    638,059.60x = 309,587,470,525.04
  5. Step 5: Solve for x
    x = 309,587,470,525.04/638,059.60
  6. Step 6: Final answer
    x = 485,201.49

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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.