Home / 1,278,780.16-1,764,689.70-697,984.12

Finding the Fourth Proportional to 1,278,780.16, 1,764,689.70 and 697,984.12

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Solution

The fourth proportional to 1,278,780.16, 1,764,689.70 and 697,984.12 is: 963,203.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,278,780.16 : 1,764,689.70 = 697,984.12 : x
  2. Step 2: Convert to fraction form
    1,278,780.16/1,764,689.70 = 697,984.12/x
  3. Step 3: Cross multiply
    1,278,780.16x = 1,764,689.70 × 697,984.12
  4. Step 4: Simplify right side
    1,278,780.16x = 1,231,725,387,327.56
  5. Step 5: Solve for x
    x = 1,231,725,387,327.56/1,278,780.16
  6. Step 6: Final answer
    x = 963,203.39

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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.