Home / 1,335,644.40-2,005,021.80-864,289.20

Finding the Fourth Proportional to 1,335,644.40, 2,005,021.80 and 864,289.20

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Solution

The fourth proportional to 1,335,644.40, 2,005,021.80 and 864,289.20 is: 1,297,440.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,335,644.40 : 2,005,021.80 = 864,289.20 : x
  2. Step 2: Convert to fraction form
    1,335,644.40/2,005,021.80 = 864,289.20/x
  3. Step 3: Cross multiply
    1,335,644.40x = 2,005,021.80 × 864,289.20
  4. Step 4: Simplify right side
    1,335,644.40x = 1,732,918,687,504.56
  5. Step 5: Solve for x
    x = 1,732,918,687,504.56/1,335,644.40
  6. Step 6: Final answer
    x = 1,297,440.16

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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.