Home / 1,221,476.64-1,685,642.04-677,623.20

Finding the Fourth Proportional to 1,221,476.64, 1,685,642.04 and 677,623.20

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Solution

The fourth proportional to 1,221,476.64, 1,685,642.04 and 677,623.20 is: 935,122.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,221,476.64 : 1,685,642.04 = 677,623.20 : x
  2. Step 2: Convert to fraction form
    1,221,476.64/1,685,642.04 = 677,623.20/x
  3. Step 3: Cross multiply
    1,221,476.64x = 1,685,642.04 × 677,623.20
  4. Step 4: Simplify right side
    1,221,476.64x = 1,142,230,153,199.33
  5. Step 5: Solve for x
    x = 1,142,230,153,199.33/1,221,476.64
  6. Step 6: Final answer
    x = 935,122.39

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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.