Home / 511,286.40-766,929.60-290,102.40

Finding the Fourth Proportional to 511,286.40, 766,929.60 and 290,102.40

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Solution

The fourth proportional to 511,286.40, 766,929.60 and 290,102.40 is: 435,153.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    511,286.40 : 766,929.60 = 290,102.40 : x
  2. Step 2: Convert to fraction form
    511,286.40/766,929.60 = 290,102.40/x
  3. Step 3: Cross multiply
    511,286.40x = 766,929.60 × 290,102.40
  4. Step 4: Simplify right side
    511,286.40x = 222,488,117,591.04
  5. Step 5: Solve for x
    x = 222,488,117,591.04/511,286.40
  6. Step 6: Final answer
    x = 435,153.60

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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.