Home / 1,222,083.86-1,686,425.74-678,242.30

Finding the Fourth Proportional to 1,222,083.86, 1,686,425.74 and 678,242.30

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Solution

The fourth proportional to 1,222,083.86, 1,686,425.74 and 678,242.30 is: 935,946.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,222,083.86 : 1,686,425.74 = 678,242.30 : x
  2. Step 2: Convert to fraction form
    1,222,083.86/1,686,425.74 = 678,242.30/x
  3. Step 3: Cross multiply
    1,222,083.86x = 1,686,425.74 × 678,242.30
  4. Step 4: Simplify right side
    1,222,083.86x = 1,143,805,262,549.07
  5. Step 5: Solve for x
    x = 1,143,805,262,549.07/1,222,083.86
  6. Step 6: Final answer
    x = 935,946.63

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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.