Home / 858,012.10-1,286,629.35-325,356.10

Finding the Fourth Proportional to 858,012.10, 1,286,629.35 and 325,356.10

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Solution

The fourth proportional to 858,012.10, 1,286,629.35 and 325,356.10 is: 487,886.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,012.10 : 1,286,629.35 = 325,356.10 : x
  2. Step 2: Convert to fraction form
    858,012.10/1,286,629.35 = 325,356.10/x
  3. Step 3: Cross multiply
    858,012.10x = 1,286,629.35 × 325,356.10
  4. Step 4: Simplify right side
    858,012.10x = 418,612,707,461.54
  5. Step 5: Solve for x
    x = 418,612,707,461.54/858,012.10
  6. Step 6: Final answer
    x = 487,886.72

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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.