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Finding the Fourth Proportional to 511,311.60, 766,967.40 and 262,479.60

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Solution

The fourth proportional to 511,311.60, 766,967.40 and 262,479.60 is: 393,719.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    511,311.60 : 766,967.40 = 262,479.60 : x
  2. Step 2: Convert to fraction form
    511,311.60/766,967.40 = 262,479.60/x
  3. Step 3: Cross multiply
    511,311.60x = 766,967.40 × 262,479.60
  4. Step 4: Simplify right side
    511,311.60x = 201,313,296,365.04
  5. Step 5: Solve for x
    x = 201,313,296,365.04/511,311.60
  6. Step 6: Final answer
    x = 393,719.40

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1.5x scale

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.