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Finding the Fourth Proportional to 543,669.70, 814,726.95 and 400,396.90

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Solution

The fourth proportional to 543,669.70, 814,726.95 and 400,396.90 is: 600,022.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,669.70 : 814,726.95 = 400,396.90 : x
  2. Step 2: Convert to fraction form
    543,669.70/814,726.95 = 400,396.90/x
  3. Step 3: Cross multiply
    543,669.70x = 814,726.95 × 400,396.90
  4. Step 4: Simplify right side
    543,669.70x = 326,214,145,126.46
  5. Step 5: Solve for x
    x = 326,214,145,126.46/543,669.70
  6. Step 6: Final answer
    x = 600,022.67

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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.