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Finding the Fourth Proportional to 607,161.88, 838,422.66 and 378,112.48

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Solution

The fourth proportional to 607,161.88, 838,422.66 and 378,112.48 is: 522,131.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    607,161.88 : 838,422.66 = 378,112.48 : x
  2. Step 2: Convert to fraction form
    607,161.88/838,422.66 = 378,112.48/x
  3. Step 3: Cross multiply
    607,161.88x = 838,422.66 × 378,112.48
  4. Step 4: Simplify right side
    607,161.88x = 317,018,071,260.80
  5. Step 5: Solve for x
    x = 317,018,071,260.80/607,161.88
  6. Step 6: Final answer
    x = 522,131.05

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.