Home / 813,853.40-1,123,173.96-451,310.72

Finding the Fourth Proportional to 813,853.40, 1,123,173.96 and 451,310.72

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Solution

The fourth proportional to 813,853.40, 1,123,173.96 and 451,310.72 is: 622,840.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    813,853.40 : 1,123,173.96 = 451,310.72 : x
  2. Step 2: Convert to fraction form
    813,853.40/1,123,173.96 = 451,310.72/x
  3. Step 3: Cross multiply
    813,853.40x = 1,123,173.96 × 451,310.72
  4. Step 4: Simplify right side
    813,853.40x = 506,900,448,572.85
  5. Step 5: Solve for x
    x = 506,900,448,572.85/813,853.40
  6. Step 6: Final answer
    x = 622,840.00

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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.