Home / 791,078.81-1,186,557.66-285,640.02

Finding the Fourth Proportional to 791,078.81, 1,186,557.66 and 285,640.02

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Solution

The fourth proportional to 791,078.81, 1,186,557.66 and 285,640.02 is: 428,438.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    791,078.81 : 1,186,557.66 = 285,640.02 : x
  2. Step 2: Convert to fraction form
    791,078.81/1,186,557.66 = 285,640.02/x
  3. Step 3: Cross multiply
    791,078.81x = 1,186,557.66 × 285,640.02
  4. Step 4: Simplify right side
    791,078.81x = 338,928,353,733.55
  5. Step 5: Solve for x
    x = 338,928,353,733.55/791,078.81
  6. Step 6: Final answer
    x = 428,438.17

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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.