Home / 1,992,881.54-2,989,796.87-645,044.38

Finding the Fourth Proportional to 1,992,881.54, 2,989,796.87 and 645,044.38

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Solution

The fourth proportional to 1,992,881.54, 2,989,796.87 and 645,044.38 is: 967,720.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,992,881.54 : 2,989,796.87 = 645,044.38 : x
  2. Step 2: Convert to fraction form
    1,992,881.54/2,989,796.87 = 645,044.38/x
  3. Step 3: Cross multiply
    1,992,881.54x = 2,989,796.87 × 645,044.38
  4. Step 4: Simplify right side
    1,992,881.54x = 1,928,551,662,473.21
  5. Step 5: Solve for x
    x = 1,928,551,662,473.21/1,992,881.54
  6. Step 6: Final answer
    x = 967,720.17

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.