Home / 1,240,009.20-1,855,348.20-820,105.20

Finding the Fourth Proportional to 1,240,009.20, 1,855,348.20 and 820,105.20

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Solution

The fourth proportional to 1,240,009.20, 1,855,348.20 and 820,105.20 is: 1,227,072.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,240,009.20 : 1,855,348.20 = 820,105.20 : x
  2. Step 2: Convert to fraction form
    1,240,009.20/1,855,348.20 = 820,105.20/x
  3. Step 3: Cross multiply
    1,240,009.20x = 1,855,348.20 × 820,105.20
  4. Step 4: Simplify right side
    1,240,009.20x = 1,521,580,706,630.64
  5. Step 5: Solve for x
    x = 1,521,580,706,630.64/1,240,009.20
  6. Step 6: Final answer
    x = 1,227,072.11

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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.