Home / 680,699.12-1,021,118.52-260,328.56

Finding the Fourth Proportional to 680,699.12, 1,021,118.52 and 260,328.56

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Solution

The fourth proportional to 680,699.12, 1,021,118.52 and 260,328.56 is: 390,519.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,699.12 : 1,021,118.52 = 260,328.56 : x
  2. Step 2: Convert to fraction form
    680,699.12/1,021,118.52 = 260,328.56/x
  3. Step 3: Cross multiply
    680,699.12x = 1,021,118.52 × 260,328.56
  4. Step 4: Simplify right side
    680,699.12x = 265,826,313,900.93
  5. Step 5: Solve for x
    x = 265,826,313,900.93/680,699.12
  6. Step 6: Final answer
    x = 390,519.55

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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.