Home / 638,295.12-880,853.40-351,826.20

Finding the Fourth Proportional to 638,295.12, 880,853.40 and 351,826.20

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Solution

The fourth proportional to 638,295.12, 880,853.40 and 351,826.20 is: 485,523.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,295.12 : 880,853.40 = 351,826.20 : x
  2. Step 2: Convert to fraction form
    638,295.12/880,853.40 = 351,826.20/x
  3. Step 3: Cross multiply
    638,295.12x = 880,853.40 × 351,826.20
  4. Step 4: Simplify right side
    638,295.12x = 309,907,304,479.08
  5. Step 5: Solve for x
    x = 309,907,304,479.08/638,295.12
  6. Step 6: Final answer
    x = 485,523.54

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Double scale
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1.5x scale

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.