Home / 819,448.30-1,229,172.45-778,897.90

Finding the Fourth Proportional to 819,448.30, 1,229,172.45 and 778,897.90

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Solution

The fourth proportional to 819,448.30, 1,229,172.45 and 778,897.90 is: 1,168,346.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,448.30 : 1,229,172.45 = 778,897.90 : x
  2. Step 2: Convert to fraction form
    819,448.30/1,229,172.45 = 778,897.90/x
  3. Step 3: Cross multiply
    819,448.30x = 1,229,172.45 × 778,897.90
  4. Step 4: Simplify right side
    819,448.30x = 957,399,840,042.86
  5. Step 5: Solve for x
    x = 957,399,840,042.86/819,448.30
  6. Step 6: Final answer
    x = 1,168,346.85

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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.