Home / 811,942.20-1,120,355.41-467,710.89

Finding the Fourth Proportional to 811,942.20, 1,120,355.41 and 467,710.89

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Solution

The fourth proportional to 811,942.20, 1,120,355.41 and 467,710.89 is: 645,369.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,942.20 : 1,120,355.41 = 467,710.89 : x
  2. Step 2: Convert to fraction form
    811,942.20/1,120,355.41 = 467,710.89/x
  3. Step 3: Cross multiply
    811,942.20x = 1,120,355.41 × 467,710.89
  4. Step 4: Simplify right side
    811,942.20x = 524,002,425,927.42
  5. Step 5: Solve for x
    x = 524,002,425,927.42/811,942.20
  6. Step 6: Final answer
    x = 645,369.13

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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.