Home / 863,849.20-1,296,421.80-442,908.40

Finding the Fourth Proportional to 863,849.20, 1,296,421.80 and 442,908.40

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Solution

The fourth proportional to 863,849.20, 1,296,421.80 and 442,908.40 is: 664,694.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    863,849.20 : 1,296,421.80 = 442,908.40 : x
  2. Step 2: Convert to fraction form
    863,849.20/1,296,421.80 = 442,908.40/x
  3. Step 3: Cross multiply
    863,849.20x = 1,296,421.80 × 442,908.40
  4. Step 4: Simplify right side
    863,849.20x = 574,196,105,163.12
  5. Step 5: Solve for x
    x = 574,196,105,163.12/863,849.20
  6. Step 6: Final answer
    x = 664,694.84

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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.