Home / 858,785.10-1,287,788.85-326,129.10

Finding the Fourth Proportional to 858,785.10, 1,287,788.85 and 326,129.10

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Solution

The fourth proportional to 858,785.10, 1,287,788.85 and 326,129.10 is: 489,046.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,785.10 : 1,287,788.85 = 326,129.10 : x
  2. Step 2: Convert to fraction form
    858,785.10/1,287,788.85 = 326,129.10/x
  3. Step 3: Cross multiply
    858,785.10x = 1,287,788.85 × 326,129.10
  4. Step 4: Simplify right side
    858,785.10x = 419,985,418,640.54
  5. Step 5: Solve for x
    x = 419,985,418,640.54/858,785.10
  6. Step 6: Final answer
    x = 489,046.00

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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.