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Finding the Fourth Proportional to 858,751.10, 1,287,737.85 and 326,095.10

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Solution

The fourth proportional to 858,751.10, 1,287,737.85 and 326,095.10 is: 488,995.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,751.10 : 1,287,737.85 = 326,095.10 : x
  2. Step 2: Convert to fraction form
    858,751.10/1,287,737.85 = 326,095.10/x
  3. Step 3: Cross multiply
    858,751.10x = 1,287,737.85 × 326,095.10
  4. Step 4: Simplify right side
    858,751.10x = 419,925,002,969.54
  5. Step 5: Solve for x
    x = 419,925,002,969.54/858,751.10
  6. Step 6: Final answer
    x = 488,995.01

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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.