Home / 1,239,920.70-1,859,881.05-1,228,110.90

Finding the Fourth Proportional to 1,239,920.70, 1,859,881.05 and 1,228,110.90

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Solution

The fourth proportional to 1,239,920.70, 1,859,881.05 and 1,228,110.90 is: 1,842,166.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,239,920.70 : 1,859,881.05 = 1,228,110.90 : x
  2. Step 2: Convert to fraction form
    1,239,920.70/1,859,881.05 = 1,228,110.90/x
  3. Step 3: Cross multiply
    1,239,920.70x = 1,859,881.05 × 1,228,110.90
  4. Step 4: Simplify right side
    1,239,920.70x = 2,284,140,190,208.44
  5. Step 5: Solve for x
    x = 2,284,140,190,208.44/1,239,920.70
  6. Step 6: Final answer
    x = 1,842,166.35

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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.