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Finding the Fourth Proportional to 636,074.64, 877,776.48 and 349,588.80

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Solution

The fourth proportional to 636,074.64, 877,776.48 and 349,588.80 is: 482,428.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,074.64 : 877,776.48 = 349,588.80 : x
  2. Step 2: Convert to fraction form
    636,074.64/877,776.48 = 349,588.80/x
  3. Step 3: Cross multiply
    636,074.64x = 877,776.48 × 349,588.80
  4. Step 4: Simplify right side
    636,074.64x = 306,860,826,311.42
  5. Step 5: Solve for x
    x = 306,860,826,311.42/636,074.64
  6. Step 6: Final answer
    x = 482,428.96

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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.