Home / 1,221,866.39-1,686,094.58-677,967.71

Finding the Fourth Proportional to 1,221,866.39, 1,686,094.58 and 677,967.71

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Solution

The fourth proportional to 1,221,866.39, 1,686,094.58 and 677,967.71 is: 935,550.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,221,866.39 : 1,686,094.58 = 677,967.71 : x
  2. Step 2: Convert to fraction form
    1,221,866.39/1,686,094.58 = 677,967.71/x
  3. Step 3: Cross multiply
    1,221,866.39x = 1,686,094.58 × 677,967.71
  4. Step 4: Simplify right side
    1,221,866.39x = 1,143,117,674,510.46
  5. Step 5: Solve for x
    x = 1,143,117,674,510.46/1,221,866.39
  6. Step 6: Final answer
    x = 935,550.47

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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.