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Finding the Fourth Proportional to 580,480.20, 870,878.10 and 243,343.80

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Solution

The fourth proportional to 580,480.20, 870,878.10 and 243,343.80 is: 365,081.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    580,480.20 : 870,878.10 = 243,343.80 : x
  2. Step 2: Convert to fraction form
    580,480.20/870,878.10 = 243,343.80/x
  3. Step 3: Cross multiply
    580,480.20x = 870,878.10 × 243,343.80
  4. Step 4: Simplify right side
    580,480.20x = 211,922,786,190.78
  5. Step 5: Solve for x
    x = 211,922,786,190.78/580,480.20
  6. Step 6: Final answer
    x = 365,081.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.