Home / 838,076.80-1,257,115.20-305,615.20

Finding the Fourth Proportional to 838,076.80, 1,257,115.20 and 305,615.20

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Solution

The fourth proportional to 838,076.80, 1,257,115.20 and 305,615.20 is: 458,422.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    838,076.80 : 1,257,115.20 = 305,615.20 : x
  2. Step 2: Convert to fraction form
    838,076.80/1,257,115.20 = 305,615.20/x
  3. Step 3: Cross multiply
    838,076.80x = 1,257,115.20 × 305,615.20
  4. Step 4: Simplify right side
    838,076.80x = 384,193,513,271.04
  5. Step 5: Solve for x
    x = 384,193,513,271.04/838,076.80
  6. Step 6: Final answer
    x = 458,422.80

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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.