Home / 1,215,009.40-1,822,514.10-764,268.70

Finding the Fourth Proportional to 1,215,009.40, 1,822,514.10 and 764,268.70

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Solution

The fourth proportional to 1,215,009.40, 1,822,514.10 and 764,268.70 is: 1,146,403.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,215,009.40 : 1,822,514.10 = 764,268.70 : x
  2. Step 2: Convert to fraction form
    1,215,009.40/1,822,514.10 = 764,268.70/x
  3. Step 3: Cross multiply
    1,215,009.40x = 1,822,514.10 × 764,268.70
  4. Step 4: Simplify right side
    1,215,009.40x = 1,392,890,481,938.67
  5. Step 5: Solve for x
    x = 1,392,890,481,938.67/1,215,009.40
  6. Step 6: Final answer
    x = 1,146,403.05

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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.