Home / 1,220,288.85-1,683,429.07-767,829.33

Finding the Fourth Proportional to 1,220,288.85, 1,683,429.07 and 767,829.33

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Solution

The fourth proportional to 1,220,288.85, 1,683,429.07 and 767,829.33 is: 1,059,246.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,220,288.85 : 1,683,429.07 = 767,829.33 : x
  2. Step 2: Convert to fraction form
    1,220,288.85/1,683,429.07 = 767,829.33/x
  3. Step 3: Cross multiply
    1,220,288.85x = 1,683,429.07 × 767,829.33
  4. Step 4: Simplify right side
    1,220,288.85x = 1,292,586,220,753.59
  5. Step 5: Solve for x
    x = 1,292,586,220,753.59/1,220,288.85
  6. Step 6: Final answer
    x = 1,059,246.11

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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.