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Finding the Fourth Proportional to 786,910.80, 1,180,657.80 and 254,449.20

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Solution

The fourth proportional to 786,910.80, 1,180,657.80 and 254,449.20 is: 381,768.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    786,910.80 : 1,180,657.80 = 254,449.20 : x
  2. Step 2: Convert to fraction form
    786,910.80/1,180,657.80 = 254,449.20/x
  3. Step 3: Cross multiply
    786,910.80x = 1,180,657.80 × 254,449.20
  4. Step 4: Simplify right side
    786,910.80x = 300,417,432,683.76
  5. Step 5: Solve for x
    x = 300,417,432,683.76/786,910.80
  6. Step 6: Final answer
    x = 381,768.09

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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.