Home / 638,212.64-880,883.53-396,677.63

Finding the Fourth Proportional to 638,212.64, 880,883.53 and 396,677.63

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Solution

The fourth proportional to 638,212.64, 880,883.53 and 396,677.63 is: 547,508.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,212.64 : 880,883.53 = 396,677.63 : x
  2. Step 2: Convert to fraction form
    638,212.64/880,883.53 = 396,677.63/x
  3. Step 3: Cross multiply
    638,212.64x = 880,883.53 × 396,677.63
  4. Step 4: Simplify right side
    638,212.64x = 349,426,790,986.43
  5. Step 5: Solve for x
    x = 349,426,790,986.43/638,212.64
  6. Step 6: Final answer
    x = 547,508.42

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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.