Home / 780,201.25-1,170,639.95-275,123.12

Finding the Fourth Proportional to 780,201.25, 1,170,639.95 and 275,123.12

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Solution

The fourth proportional to 780,201.25, 1,170,639.95 and 275,123.12 is: 412,803.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,201.25 : 1,170,639.95 = 275,123.12 : x
  2. Step 2: Convert to fraction form
    780,201.25/1,170,639.95 = 275,123.12/x
  3. Step 3: Cross multiply
    780,201.25x = 1,170,639.95 × 275,123.12
  4. Step 4: Simplify right side
    780,201.25x = 322,070,108,211.83
  5. Step 5: Solve for x
    x = 322,070,108,211.83/780,201.25
  6. Step 6: Final answer
    x = 412,803.89

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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.