Home / 781,825.50-1,172,740.68-190,849.50

Finding the Fourth Proportional to 781,825.50, 1,172,740.68 and 190,849.50

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Solution

The fourth proportional to 781,825.50, 1,172,740.68 and 190,849.50 is: 286,274.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    781,825.50 : 1,172,740.68 = 190,849.50 : x
  2. Step 2: Convert to fraction form
    781,825.50/1,172,740.68 = 190,849.50/x
  3. Step 3: Cross multiply
    781,825.50x = 1,172,740.68 × 190,849.50
  4. Step 4: Simplify right side
    781,825.50x = 223,816,972,407.66
  5. Step 5: Solve for x
    x = 223,816,972,407.66/781,825.50
  6. Step 6: Final answer
    x = 286,274.84

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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.