Home / 1,388,882.78-2,083,517.80-429,416.72

Finding the Fourth Proportional to 1,388,882.78, 2,083,517.80 and 429,416.72

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Solution

The fourth proportional to 1,388,882.78, 2,083,517.80 and 429,416.72 is: 644,184.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,388,882.78 : 2,083,517.80 = 429,416.72 : x
  2. Step 2: Convert to fraction form
    1,388,882.78/2,083,517.80 = 429,416.72/x
  3. Step 3: Cross multiply
    1,388,882.78x = 2,083,517.80 × 429,416.72
  4. Step 4: Simplify right side
    1,388,882.78x = 894,697,379,737.62
  5. Step 5: Solve for x
    x = 894,697,379,737.62/1,388,882.78
  6. Step 6: Final answer
    x = 644,184.95

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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.