Home / 638,214.96-880,736.64-351,735.04

Finding the Fourth Proportional to 638,214.96, 880,736.64 and 351,735.04

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Solution

The fourth proportional to 638,214.96, 880,736.64 and 351,735.04 is: 485,394.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,214.96 : 880,736.64 = 351,735.04 : x
  2. Step 2: Convert to fraction form
    638,214.96/880,736.64 = 351,735.04/x
  3. Step 3: Cross multiply
    638,214.96x = 880,736.64 × 351,735.04
  4. Step 4: Simplify right side
    638,214.96x = 309,785,937,299.87
  5. Step 5: Solve for x
    x = 309,785,937,299.87/638,214.96
  6. Step 6: Final answer
    x = 485,394.35

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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.