Home / 782,189.40-1,172,808.90-308,328.60

Finding the Fourth Proportional to 782,189.40, 1,172,808.90 and 308,328.60

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Solution

The fourth proportional to 782,189.40, 1,172,808.90 and 308,328.60 is: 462,305.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    782,189.40 : 1,172,808.90 = 308,328.60 : x
  2. Step 2: Convert to fraction form
    782,189.40/1,172,808.90 = 308,328.60/x
  3. Step 3: Cross multiply
    782,189.40x = 1,172,808.90 × 308,328.60
  4. Step 4: Simplify right side
    782,189.40x = 361,610,526,204.54
  5. Step 5: Solve for x
    x = 361,610,526,204.54/782,189.40
  6. Step 6: Final answer
    x = 462,305.58

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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.