Home / 813,874.64-1,123,160.45-451,313.78

Finding the Fourth Proportional to 813,874.64, 1,123,160.45 and 451,313.78

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Solution

The fourth proportional to 813,874.64, 1,123,160.45 and 451,313.78 is: 622,820.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    813,874.64 : 1,123,160.45 = 451,313.78 : x
  2. Step 2: Convert to fraction form
    813,874.64/1,123,160.45 = 451,313.78/x
  3. Step 3: Cross multiply
    813,874.64x = 1,123,160.45 × 451,313.78
  4. Step 4: Simplify right side
    813,874.64x = 506,897,780,363.63
  5. Step 5: Solve for x
    x = 506,897,780,363.63/813,874.64
  6. Step 6: Final answer
    x = 622,820.47

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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.