Home / 1,383,731.40-1,909,596.75-802,910.78

Finding the Fourth Proportional to 1,383,731.40, 1,909,596.75 and 802,910.78

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Solution

The fourth proportional to 1,383,731.40, 1,909,596.75 and 802,910.78 is: 1,108,044.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,383,731.40 : 1,909,596.75 = 802,910.78 : x
  2. Step 2: Convert to fraction form
    1,383,731.40/1,909,596.75 = 802,910.78/x
  3. Step 3: Cross multiply
    1,383,731.40x = 1,909,596.75 × 802,910.78
  4. Step 4: Simplify right side
    1,383,731.40x = 1,533,235,806,479.98
  5. Step 5: Solve for x
    x = 1,533,235,806,479.98/1,383,731.40
  6. Step 6: Final answer
    x = 1,108,044.38

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.