Home / 1,280,640.54-1,767,284.55-707,680.71

Finding the Fourth Proportional to 1,280,640.54, 1,767,284.55 and 707,680.71

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Solution

The fourth proportional to 1,280,640.54, 1,767,284.55 and 707,680.71 is: 976,599.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,280,640.54 : 1,767,284.55 = 707,680.71 : x
  2. Step 2: Convert to fraction form
    1,280,640.54/1,767,284.55 = 707,680.71/x
  3. Step 3: Cross multiply
    1,280,640.54x = 1,767,284.55 × 707,680.71
  4. Step 4: Simplify right side
    1,280,640.54x = 1,250,673,185,116.03
  5. Step 5: Solve for x
    x = 1,250,673,185,116.03/1,280,640.54
  6. Step 6: Final answer
    x = 976,599.71

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.