Home / 680,287.78-1,020,390.36-253,741.38

Finding the Fourth Proportional to 680,287.78, 1,020,390.36 and 253,741.38

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Solution

The fourth proportional to 680,287.78, 1,020,390.36 and 253,741.38 is: 380,596.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,287.78 : 1,020,390.36 = 253,741.38 : x
  2. Step 2: Convert to fraction form
    680,287.78/1,020,390.36 = 253,741.38/x
  3. Step 3: Cross multiply
    680,287.78x = 1,020,390.36 × 253,741.38
  4. Step 4: Simplify right side
    680,287.78x = 258,915,258,085.10
  5. Step 5: Solve for x
    x = 258,915,258,085.10/680,287.78
  6. Step 6: Final answer
    x = 380,596.66

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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.