Home / 919,787.78-1,269,290.10-511,886.02

Finding the Fourth Proportional to 919,787.78, 1,269,290.10 and 511,886.02

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Solution

The fourth proportional to 919,787.78, 1,269,290.10 and 511,886.02 is: 706,393.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,787.78 : 1,269,290.10 = 511,886.02 : x
  2. Step 2: Convert to fraction form
    919,787.78/1,269,290.10 = 511,886.02/x
  3. Step 3: Cross multiply
    919,787.78x = 1,269,290.10 × 511,886.02
  4. Step 4: Simplify right side
    919,787.78x = 649,731,857,514.40
  5. Step 5: Solve for x
    x = 649,731,857,514.40/919,787.78
  6. Step 6: Final answer
    x = 706,393.23

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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.