Home / 768,724.54-1,152,086.64-312,784.43

Finding the Fourth Proportional to 768,724.54, 1,152,086.64 and 312,784.43

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Solution

The fourth proportional to 768,724.54, 1,152,086.64 and 312,784.43 is: 468,769.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,724.54 : 1,152,086.64 = 312,784.43 : x
  2. Step 2: Convert to fraction form
    768,724.54/1,152,086.64 = 312,784.43/x
  3. Step 3: Cross multiply
    768,724.54x = 1,152,086.64 × 312,784.43
  4. Step 4: Simplify right side
    768,724.54x = 360,354,763,003.02
  5. Step 5: Solve for x
    x = 360,354,763,003.02/768,724.54
  6. Step 6: Final answer
    x = 468,769.69

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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.