Home / 1,992,820.64-2,989,705.28-644,983.28

Finding the Fourth Proportional to 1,992,820.64, 2,989,705.28 and 644,983.28

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Solution

The fourth proportional to 1,992,820.64, 2,989,705.28 and 644,983.28 is: 967,628.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,992,820.64 : 2,989,705.28 = 644,983.28 : x
  2. Step 2: Convert to fraction form
    1,992,820.64/2,989,705.28 = 644,983.28/x
  3. Step 3: Cross multiply
    1,992,820.64x = 2,989,705.28 × 644,983.28
  4. Step 4: Simplify right side
    1,992,820.64x = 1,928,309,917,727.72
  5. Step 5: Solve for x
    x = 1,928,309,917,727.72/1,992,820.64
  6. Step 6: Final answer
    x = 967,628.44

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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.