Home / 869,745.20-1,304,747.40-308,732.72

Finding the Fourth Proportional to 869,745.20, 1,304,747.40 and 308,732.72

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Solution

The fourth proportional to 869,745.20, 1,304,747.40 and 308,732.72 is: 463,145.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    869,745.20 : 1,304,747.40 = 308,732.72 : x
  2. Step 2: Convert to fraction form
    869,745.20/1,304,747.40 = 308,732.72/x
  3. Step 3: Cross multiply
    869,745.20x = 1,304,747.40 × 308,732.72
  4. Step 4: Simplify right side
    869,745.20x = 402,818,213,714.93
  5. Step 5: Solve for x
    x = 402,818,213,714.93/869,745.20
  6. Step 6: Final answer
    x = 463,145.08

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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.