Home / 781,043.51-1,171,335.63-331,760.81

Finding the Fourth Proportional to 781,043.51, 1,171,335.63 and 331,760.81

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Solution

The fourth proportional to 781,043.51, 1,171,335.63 and 331,760.81 is: 497,543.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    781,043.51 : 1,171,335.63 = 331,760.81 : x
  2. Step 2: Convert to fraction form
    781,043.51/1,171,335.63 = 331,760.81/x
  3. Step 3: Cross multiply
    781,043.51x = 1,171,335.63 × 331,760.81
  4. Step 4: Simplify right side
    781,043.51x = 388,603,261,563.10
  5. Step 5: Solve for x
    x = 388,603,261,563.10/781,043.51
  6. Step 6: Final answer
    x = 497,543.68

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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.