Home / 1,989,358.31-2,984,619.69-641,493.81

Finding the Fourth Proportional to 1,989,358.31, 2,984,619.69 and 641,493.81

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Solution

The fourth proportional to 1,989,358.31, 2,984,619.69 and 641,493.81 is: 962,428.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,989,358.31 : 2,984,619.69 = 641,493.81 : x
  2. Step 2: Convert to fraction form
    1,989,358.31/2,984,619.69 = 641,493.81/x
  3. Step 3: Cross multiply
    1,989,358.31x = 2,984,619.69 × 641,493.81
  4. Step 4: Simplify right side
    1,989,358.31x = 1,914,615,056,339.12
  5. Step 5: Solve for x
    x = 1,914,615,056,339.12/1,989,358.31
  6. Step 6: Final answer
    x = 962,428.46

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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.