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Finding the Fourth Proportional to 636,404, 878,215.04 and 349,922.08

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Solution

The fourth proportional to 636,404, 878,215.04 and 349,922.08 is: 482,880.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,404 : 878,215.04 = 349,922.08 : x
  2. Step 2: Convert to fraction form
    636,404/878,215.04 = 349,922.08/x
  3. Step 3: Cross multiply
    636,404x = 878,215.04 × 349,922.08
  4. Step 4: Simplify right side
    636,404x = 307,306,833,484.08
  5. Step 5: Solve for x
    x = 307,306,833,484.08/636,404
  6. Step 6: Final answer
    x = 482,880.11

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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.