Home / 1,222,219.76-1,686,681.24-678,390.44

Finding the Fourth Proportional to 1,222,219.76, 1,686,681.24 and 678,390.44

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Solution

The fourth proportional to 1,222,219.76, 1,686,681.24 and 678,390.44 is: 936,188.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,222,219.76 : 1,686,681.24 = 678,390.44 : x
  2. Step 2: Convert to fraction form
    1,222,219.76/1,686,681.24 = 678,390.44/x
  3. Step 3: Cross multiply
    1,222,219.76x = 1,686,681.24 × 678,390.44
  4. Step 4: Simplify right side
    1,222,219.76x = 1,144,228,428,543.35
  5. Step 5: Solve for x
    x = 1,144,228,428,543.35/1,222,219.76
  6. Step 6: Final answer
    x = 936,188.78

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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.