Home / 1,221,726.52-1,686,184.86-678,036.94

Finding the Fourth Proportional to 1,221,726.52, 1,686,184.86 and 678,036.94

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Solution

The fourth proportional to 1,221,726.52, 1,686,184.86 and 678,036.94 is: 935,803.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,221,726.52 : 1,686,184.86 = 678,036.94 : x
  2. Step 2: Convert to fraction form
    1,221,726.52/1,686,184.86 = 678,036.94/x
  3. Step 3: Cross multiply
    1,221,726.52x = 1,686,184.86 × 678,036.94
  4. Step 4: Simplify right side
    1,221,726.52x = 1,143,295,622,748.73
  5. Step 5: Solve for x
    x = 1,143,295,622,748.73/1,221,726.52
  6. Step 6: Final answer
    x = 935,803.23

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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.