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Finding the Fourth Proportional to 636,074.34, 877,784.50 and 349,623.78

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Solution

The fourth proportional to 636,074.34, 877,784.50 and 349,623.78 is: 482,481.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,074.34 : 877,784.50 = 349,623.78 : x
  2. Step 2: Convert to fraction form
    636,074.34/877,784.50 = 349,623.78/x
  3. Step 3: Cross multiply
    636,074.34x = 877,784.50 × 349,623.78
  4. Step 4: Simplify right side
    636,074.34x = 306,894,334,915.41
  5. Step 5: Solve for x
    x = 306,894,334,915.41/636,074.34
  6. Step 6: Final answer
    x = 482,481.87

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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.