Home / 638,133.28-880,629.84-351,663.64

Finding the Fourth Proportional to 638,133.28, 880,629.84 and 351,663.64

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Solution

The fourth proportional to 638,133.28, 880,629.84 and 351,663.64 is: 485,299.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,133.28 : 880,629.84 = 351,663.64 : x
  2. Step 2: Convert to fraction form
    638,133.28/880,629.84 = 351,663.64/x
  3. Step 3: Cross multiply
    638,133.28x = 880,629.84 × 351,663.64
  4. Step 4: Simplify right side
    638,133.28x = 309,685,495,027.02
  5. Step 5: Solve for x
    x = 309,685,495,027.02/638,133.28
  6. Step 6: Final answer
    x = 485,299.08

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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.