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Finding the Fourth Proportional to 786,872.80, 1,180,600.80 and 254,411.20

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Solution

The fourth proportional to 786,872.80, 1,180,600.80 and 254,411.20 is: 381,711.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    786,872.80 : 1,180,600.80 = 254,411.20 : x
  2. Step 2: Convert to fraction form
    786,872.80/1,180,600.80 = 254,411.20/x
  3. Step 3: Cross multiply
    786,872.80x = 1,180,600.80 × 254,411.20
  4. Step 4: Simplify right side
    786,872.80x = 300,358,066,248.96
  5. Step 5: Solve for x
    x = 300,358,066,248.96/786,872.80
  6. Step 6: Final answer
    x = 381,711.08

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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.