Home / 1,309,419.20-1,964,128.80-467,998.40

Finding the Fourth Proportional to 1,309,419.20, 1,964,128.80 and 467,998.40

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Solution

The fourth proportional to 1,309,419.20, 1,964,128.80 and 467,998.40 is: 701,997.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,309,419.20 : 1,964,128.80 = 467,998.40 : x
  2. Step 2: Convert to fraction form
    1,309,419.20/1,964,128.80 = 467,998.40/x
  3. Step 3: Cross multiply
    1,309,419.20x = 1,964,128.80 × 467,998.40
  4. Step 4: Simplify right side
    1,309,419.20x = 919,209,135,793.92
  5. Step 5: Solve for x
    x = 919,209,135,793.92/1,309,419.20
  6. Step 6: Final answer
    x = 701,997.60

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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.