Home / 678,589.78-1,017,919.71-173,155.18

Finding the Fourth Proportional to 678,589.78, 1,017,919.71 and 173,155.18

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Solution

The fourth proportional to 678,589.78, 1,017,919.71 and 173,155.18 is: 259,741.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,589.78 : 1,017,919.71 = 173,155.18 : x
  2. Step 2: Convert to fraction form
    678,589.78/1,017,919.71 = 173,155.18/x
  3. Step 3: Cross multiply
    678,589.78x = 1,017,919.71 × 173,155.18
  4. Step 4: Simplify right side
    678,589.78x = 176,258,072,506.07
  5. Step 5: Solve for x
    x = 176,258,072,506.07/678,589.78
  6. Step 6: Final answer
    x = 259,741.71

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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.