Home / 792,139.80-1,188,501.30-259,678.20

Finding the Fourth Proportional to 792,139.80, 1,188,501.30 and 259,678.20

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Solution

The fourth proportional to 792,139.80, 1,188,501.30 and 259,678.20 is: 389,612.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    792,139.80 : 1,188,501.30 = 259,678.20 : x
  2. Step 2: Convert to fraction form
    792,139.80/1,188,501.30 = 259,678.20/x
  3. Step 3: Cross multiply
    792,139.80x = 1,188,501.30 × 259,678.20
  4. Step 4: Simplify right side
    792,139.80x = 308,627,878,281.66
  5. Step 5: Solve for x
    x = 308,627,878,281.66/792,139.80
  6. Step 6: Final answer
    x = 389,612.89

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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.