Home / 1,221,857.76-1,686,082.69-677,959.07

Finding the Fourth Proportional to 1,221,857.76, 1,686,082.69 and 677,959.07

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Solution

The fourth proportional to 1,221,857.76, 1,686,082.69 and 677,959.07 is: 935,538.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,221,857.76 : 1,686,082.69 = 677,959.07 : x
  2. Step 2: Convert to fraction form
    1,221,857.76/1,686,082.69 = 677,959.07/x
  3. Step 3: Cross multiply
    1,221,857.76x = 1,686,082.69 × 677,959.07
  4. Step 4: Simplify right side
    1,221,857.76x = 1,143,095,041,059.01
  5. Step 5: Solve for x
    x = 1,143,095,041,059.01/1,221,857.76
  6. Step 6: Final answer
    x = 935,538.55

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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.