Home / 780,132.59-1,170,238.97-219,210.83

Finding the Fourth Proportional to 780,132.59, 1,170,238.97 and 219,210.83

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Solution

The fourth proportional to 780,132.59, 1,170,238.97 and 219,210.83 is: 328,827.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,132.59 : 1,170,238.97 = 219,210.83 : x
  2. Step 2: Convert to fraction form
    780,132.59/1,170,238.97 = 219,210.83/x
  3. Step 3: Cross multiply
    780,132.59x = 1,170,238.97 × 219,210.83
  4. Step 4: Simplify right side
    780,132.59x = 256,529,050,060.85
  5. Step 5: Solve for x
    x = 256,529,050,060.85/780,132.59
  6. Step 6: Final answer
    x = 328,827.50

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1.5x scale

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.