Home / 621,975.60-858,591.16-418,144.74

Finding the Fourth Proportional to 621,975.60, 858,591.16 and 418,144.74

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Solution

The fourth proportional to 621,975.60, 858,591.16 and 418,144.74 is: 577,217.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,975.60 : 858,591.16 = 418,144.74 : x
  2. Step 2: Convert to fraction form
    621,975.60/858,591.16 = 418,144.74/x
  3. Step 3: Cross multiply
    621,975.60x = 858,591.16 × 418,144.74
  4. Step 4: Simplify right side
    621,975.60x = 359,015,377,364.50
  5. Step 5: Solve for x
    x = 359,015,377,364.50/621,975.60
  6. Step 6: Final answer
    x = 577,217.78

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Double scale
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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.