Home / 1,370,215.76-1,890,899.40-766,604.24

Finding the Fourth Proportional to 1,370,215.76, 1,890,899.40 and 766,604.24

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Solution

The fourth proportional to 1,370,215.76, 1,890,899.40 and 766,604.24 is: 1,057,914.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,370,215.76 : 1,890,899.40 = 766,604.24 : x
  2. Step 2: Convert to fraction form
    1,370,215.76/1,890,899.40 = 766,604.24/x
  3. Step 3: Cross multiply
    1,370,215.76x = 1,890,899.40 × 766,604.24
  4. Step 4: Simplify right side
    1,370,215.76x = 1,449,571,497,453.46
  5. Step 5: Solve for x
    x = 1,449,571,497,453.46/1,370,215.76
  6. Step 6: Final answer
    x = 1,057,914.78

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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.