Home / 820,237.52-1,230,348.90-259,272.20

Finding the Fourth Proportional to 820,237.52, 1,230,348.90 and 259,272.20

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Solution

The fourth proportional to 820,237.52, 1,230,348.90 and 259,272.20 is: 388,905.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,237.52 : 1,230,348.90 = 259,272.20 : x
  2. Step 2: Convert to fraction form
    820,237.52/1,230,348.90 = 259,272.20/x
  3. Step 3: Cross multiply
    820,237.52x = 1,230,348.90 × 259,272.20
  4. Step 4: Simplify right side
    820,237.52x = 318,995,266,070.58
  5. Step 5: Solve for x
    x = 318,995,266,070.58/820,237.52
  6. Step 6: Final answer
    x = 388,905.97

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1.5x scale

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.