Home / 991,787.20-1,487,680.80-613,009.60

Finding the Fourth Proportional to 991,787.20, 1,487,680.80 and 613,009.60

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Solution

The fourth proportional to 991,787.20, 1,487,680.80 and 613,009.60 is: 919,514.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    991,787.20 : 1,487,680.80 = 613,009.60 : x
  2. Step 2: Convert to fraction form
    991,787.20/1,487,680.80 = 613,009.60/x
  3. Step 3: Cross multiply
    991,787.20x = 1,487,680.80 × 613,009.60
  4. Step 4: Simplify right side
    991,787.20x = 911,962,612,135.68
  5. Step 5: Solve for x
    x = 911,962,612,135.68/991,787.20
  6. Step 6: Final answer
    x = 919,514.40

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Similar ratio
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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.