Home / 780,398.15-1,170,597.69-219,432.65

Finding the Fourth Proportional to 780,398.15, 1,170,597.69 and 219,432.65

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Solution

The fourth proportional to 780,398.15, 1,170,597.69 and 219,432.65 is: 329,149.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,398.15 : 1,170,597.69 = 219,432.65 : x
  2. Step 2: Convert to fraction form
    780,398.15/1,170,597.69 = 219,432.65/x
  3. Step 3: Cross multiply
    780,398.15x = 1,170,597.69 × 219,432.65
  4. Step 4: Simplify right side
    780,398.15x = 256,867,347,347.59
  5. Step 5: Solve for x
    x = 256,867,347,347.59/780,398.15
  6. Step 6: Final answer
    x = 329,149.10

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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.