Home / 781,106.68-1,171,238.52-354,409.68

Finding the Fourth Proportional to 781,106.68, 1,171,238.52 and 354,409.68

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Solution

The fourth proportional to 781,106.68, 1,171,238.52 and 354,409.68 is: 531,423.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    781,106.68 : 1,171,238.52 = 354,409.68 : x
  2. Step 2: Convert to fraction form
    781,106.68/1,171,238.52 = 354,409.68/x
  3. Step 3: Cross multiply
    781,106.68x = 1,171,238.52 × 354,409.68
  4. Step 4: Simplify right side
    781,106.68x = 415,098,269,076.87
  5. Step 5: Solve for x
    x = 415,098,269,076.87/781,106.68
  6. Step 6: Final answer
    x = 531,423.27

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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.