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Finding the Fourth Proportional to 626,468.30, 864,401.20 and 381,288.84

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Solution

The fourth proportional to 626,468.30, 864,401.20 and 381,288.84 is: 526,102.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,468.30 : 864,401.20 = 381,288.84 : x
  2. Step 2: Convert to fraction form
    626,468.30/864,401.20 = 381,288.84/x
  3. Step 3: Cross multiply
    626,468.30x = 864,401.20 × 381,288.84
  4. Step 4: Simplify right side
    626,468.30x = 329,586,526,647.88
  5. Step 5: Solve for x
    x = 329,586,526,647.88/626,468.30
  6. Step 6: Final answer
    x = 526,102.48

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1.5x scale

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.