Home / 635,680.65-876,872.55-380,884.20

Finding the Fourth Proportional to 635,680.65, 876,872.55 and 380,884.20

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Solution

The fourth proportional to 635,680.65, 876,872.55 and 380,884.20 is: 525,400.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    635,680.65 : 876,872.55 = 380,884.20 : x
  2. Step 2: Convert to fraction form
    635,680.65/876,872.55 = 380,884.20/x
  3. Step 3: Cross multiply
    635,680.65x = 876,872.55 × 380,884.20
  4. Step 4: Simplify right side
    635,680.65x = 333,986,899,708.71
  5. Step 5: Solve for x
    x = 333,986,899,708.71/635,680.65
  6. Step 6: Final answer
    x = 525,400.45

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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.