Home / 1,988,115-2,982,172.56-492,207

Finding the Fourth Proportional to 1,988,115, 2,982,172.56 and 492,207

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Solution

The fourth proportional to 1,988,115, 2,982,172.56 and 492,207 is: 738,310.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,988,115 : 2,982,172.56 = 492,207 : x
  2. Step 2: Convert to fraction form
    1,988,115/2,982,172.56 = 492,207/x
  3. Step 3: Cross multiply
    1,988,115x = 2,982,172.56 × 492,207
  4. Step 4: Simplify right side
    1,988,115x = 1,467,846,209,239.92
  5. Step 5: Solve for x
    x = 1,467,846,209,239.92/1,988,115
  6. Step 6: Final answer
    x = 738,310.51

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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.