Home / 680,514.80-1,020,334.80-281,314.40

Finding the Fourth Proportional to 680,514.80, 1,020,334.80 and 281,314.40

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Solution

The fourth proportional to 680,514.80, 1,020,334.80 and 281,314.40 is: 421,790.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,514.80 : 1,020,334.80 = 281,314.40 : x
  2. Step 2: Convert to fraction form
    680,514.80/1,020,334.80 = 281,314.40/x
  3. Step 3: Cross multiply
    680,514.80x = 1,020,334.80 × 281,314.40
  4. Step 4: Simplify right side
    680,514.80x = 287,034,872,061.12
  5. Step 5: Solve for x
    x = 287,034,872,061.12/680,514.80
  6. Step 6: Final answer
    x = 421,790.79

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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.