Home / 1,221,860.76-1,686,086.82-677,962.08

Finding the Fourth Proportional to 1,221,860.76, 1,686,086.82 and 677,962.08

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Solution

The fourth proportional to 1,221,860.76, 1,686,086.82 and 677,962.08 is: 935,542.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,221,860.76 : 1,686,086.82 = 677,962.08 : x
  2. Step 2: Convert to fraction form
    1,221,860.76/1,686,086.82 = 677,962.08/x
  3. Step 3: Cross multiply
    1,221,860.76x = 1,686,086.82 × 677,962.08
  4. Step 4: Simplify right side
    1,221,860.76x = 1,143,102,927,547.79
  5. Step 5: Solve for x
    x = 1,143,102,927,547.79/1,221,860.76
  6. Step 6: Final answer
    x = 935,542.71

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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.