Home / 680,697.12-1,021,115.52-260,326.56

Finding the Fourth Proportional to 680,697.12, 1,021,115.52 and 260,326.56

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Solution

The fourth proportional to 680,697.12, 1,021,115.52 and 260,326.56 is: 390,516.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,697.12 : 1,021,115.52 = 260,326.56 : x
  2. Step 2: Convert to fraction form
    680,697.12/1,021,115.52 = 260,326.56/x
  3. Step 3: Cross multiply
    680,697.12x = 1,021,115.52 × 260,326.56
  4. Step 4: Simplify right side
    680,697.12x = 265,823,490,684.21
  5. Step 5: Solve for x
    x = 265,823,490,684.21/680,697.12
  6. Step 6: Final answer
    x = 390,516.55

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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.