Home / 769,872.60-1,152,621.90-727,979.40

Finding the Fourth Proportional to 769,872.60, 1,152,621.90 and 727,979.40

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Solution

The fourth proportional to 769,872.60, 1,152,621.90 and 727,979.40 is: 1,089,901.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    769,872.60 : 1,152,621.90 = 727,979.40 : x
  2. Step 2: Convert to fraction form
    769,872.60/1,152,621.90 = 727,979.40/x
  3. Step 3: Cross multiply
    769,872.60x = 1,152,621.90 × 727,979.40
  4. Step 4: Simplify right side
    769,872.60x = 839,084,999,188.86
  5. Step 5: Solve for x
    x = 839,084,999,188.86/769,872.60
  6. Step 6: Final answer
    x = 1,089,901.11

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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.