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Finding the Fourth Proportional to 615,077.88, 848,865.90 and 385,671.48

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Solution

The fourth proportional to 615,077.88, 848,865.90 and 385,671.48 is: 532,263.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,077.88 : 848,865.90 = 385,671.48 : x
  2. Step 2: Convert to fraction form
    615,077.88/848,865.90 = 385,671.48/x
  3. Step 3: Cross multiply
    615,077.88x = 848,865.90 × 385,671.48
  4. Step 4: Simplify right side
    615,077.88x = 327,383,367,974.53
  5. Step 5: Solve for x
    x = 327,383,367,974.53/615,077.88
  6. Step 6: Final answer
    x = 532,263.28

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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.