Home / 1,221,502.47-1,685,675.39-677,638.27

Finding the Fourth Proportional to 1,221,502.47, 1,685,675.39 and 677,638.27

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Solution

The fourth proportional to 1,221,502.47, 1,685,675.39 and 677,638.27 is: 935,141.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,221,502.47 : 1,685,675.39 = 677,638.27 : x
  2. Step 2: Convert to fraction form
    1,221,502.47/1,685,675.39 = 677,638.27/x
  3. Step 3: Cross multiply
    1,221,502.47x = 1,685,675.39 × 677,638.27
  4. Step 4: Simplify right side
    1,221,502.47x = 1,142,278,152,541.08
  5. Step 5: Solve for x
    x = 1,142,278,152,541.08/1,221,502.47
  6. Step 6: Final answer
    x = 935,141.91

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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.