Home / 1,072,987.31-1,609,481.54-398,981.03

Finding the Fourth Proportional to 1,072,987.31, 1,609,481.54 and 398,981.03

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Solution

The fourth proportional to 1,072,987.31, 1,609,481.54 and 398,981.03 is: 598,471.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,072,987.31 : 1,609,481.54 = 398,981.03 : x
  2. Step 2: Convert to fraction form
    1,072,987.31/1,609,481.54 = 398,981.03/x
  3. Step 3: Cross multiply
    1,072,987.31x = 1,609,481.54 × 398,981.03
  4. Step 4: Simplify right side
    1,072,987.31x = 642,152,592,552.87
  5. Step 5: Solve for x
    x = 642,152,592,552.87/1,072,987.31
  6. Step 6: Final answer
    x = 598,471.75

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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.