Home / 1,220,978.80-1,683,008.84-962,436.52

Finding the Fourth Proportional to 1,220,978.80, 1,683,008.84 and 962,436.52

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Solution

The fourth proportional to 1,220,978.80, 1,683,008.84 and 962,436.52 is: 1,326,631.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,220,978.80 : 1,683,008.84 = 962,436.52 : x
  2. Step 2: Convert to fraction form
    1,220,978.80/1,683,008.84 = 962,436.52/x
  3. Step 3: Cross multiply
    1,220,978.80x = 1,683,008.84 × 962,436.52
  4. Step 4: Simplify right side
    1,220,978.80x = 1,619,789,171,098.84
  5. Step 5: Solve for x
    x = 1,619,789,171,098.84/1,220,978.80
  6. Step 6: Final answer
    x = 1,326,631.69

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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.