Home / 1,215,000.80-1,822,501.20-900,072.80

Finding the Fourth Proportional to 1,215,000.80, 1,822,501.20 and 900,072.80

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Solution

The fourth proportional to 1,215,000.80, 1,822,501.20 and 900,072.80 is: 1,350,109.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,215,000.80 : 1,822,501.20 = 900,072.80 : x
  2. Step 2: Convert to fraction form
    1,215,000.80/1,822,501.20 = 900,072.80/x
  3. Step 3: Cross multiply
    1,215,000.80x = 1,822,501.20 × 900,072.80
  4. Step 4: Simplify right side
    1,215,000.80x = 1,640,383,758,087.36
  5. Step 5: Solve for x
    x = 1,640,383,758,087.36/1,215,000.80
  6. Step 6: Final answer
    x = 1,350,109.20

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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.