Home / 1,221,610.37-1,686,024.65-677,920.79

Finding the Fourth Proportional to 1,221,610.37, 1,686,024.65 and 677,920.79

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Solution

The fourth proportional to 1,221,610.37, 1,686,024.65 and 677,920.79 is: 935,642.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,221,610.37 : 1,686,024.65 = 677,920.79 : x
  2. Step 2: Convert to fraction form
    1,221,610.37/1,686,024.65 = 677,920.79/x
  3. Step 3: Cross multiply
    1,221,610.37x = 1,686,024.65 × 677,920.79
  4. Step 4: Simplify right side
    1,221,610.37x = 1,142,991,155,952.15
  5. Step 5: Solve for x
    x = 1,142,991,155,952.15/1,221,610.37
  6. Step 6: Final answer
    x = 935,642.97

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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.