Home / 464,621.30-641,402.69-311,603.52

Finding the Fourth Proportional to 464,621.30, 641,402.69 and 311,603.52

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Solution

The fourth proportional to 464,621.30, 641,402.69 and 311,603.52 is: 430,163.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    464,621.30 : 641,402.69 = 311,603.52 : x
  2. Step 2: Convert to fraction form
    464,621.30/641,402.69 = 311,603.52/x
  3. Step 3: Cross multiply
    464,621.30x = 641,402.69 × 311,603.52
  4. Step 4: Simplify right side
    464,621.30x = 199,863,335,941.47
  5. Step 5: Solve for x
    x = 199,863,335,941.47/464,621.30
  6. Step 6: Final answer
    x = 430,163.95

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.