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Finding the Fourth Proportional to 646,076.76, 969,118.79 and 575,327.31

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Solution

The fourth proportional to 646,076.76, 969,118.79 and 575,327.31 is: 862,994.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,076.76 : 969,118.79 = 575,327.31 : x
  2. Step 2: Convert to fraction form
    646,076.76/969,118.79 = 575,327.31/x
  3. Step 3: Cross multiply
    646,076.76x = 969,118.79 × 575,327.31
  4. Step 4: Simplify right side
    646,076.76x = 557,560,503,644.52
  5. Step 5: Solve for x
    x = 557,560,503,644.52/646,076.76
  6. Step 6: Final answer
    x = 862,994.21

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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.