Home / 820,228.52-1,230,335.40-259,263.20

Finding the Fourth Proportional to 820,228.52, 1,230,335.40 and 259,263.20

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Solution

The fourth proportional to 820,228.52, 1,230,335.40 and 259,263.20 is: 388,892.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,228.52 : 1,230,335.40 = 259,263.20 : x
  2. Step 2: Convert to fraction form
    820,228.52/1,230,335.40 = 259,263.20/x
  3. Step 3: Cross multiply
    820,228.52x = 1,230,335.40 × 259,263.20
  4. Step 4: Simplify right side
    820,228.52x = 318,980,692,877.28
  5. Step 5: Solve for x
    x = 318,980,692,877.28/820,228.52
  6. Step 6: Final answer
    x = 388,892.47

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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.