Home / 820,081.10-1,230,132.69-287,617.68

Finding the Fourth Proportional to 820,081.10, 1,230,132.69 and 287,617.68

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Solution

The fourth proportional to 820,081.10, 1,230,132.69 and 287,617.68 is: 431,430.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,081.10 : 1,230,132.69 = 287,617.68 : x
  2. Step 2: Convert to fraction form
    820,081.10/1,230,132.69 = 287,617.68/x
  3. Step 3: Cross multiply
    820,081.10x = 1,230,132.69 × 287,617.68
  4. Step 4: Simplify right side
    820,081.10x = 353,807,910,389.96
  5. Step 5: Solve for x
    x = 353,807,910,389.96/820,081.10
  6. Step 6: Final answer
    x = 431,430.39

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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.