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Finding the Fourth Proportional to 636,110.75, 877,821.51 and 349,630.76

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Solution

The fourth proportional to 636,110.75, 877,821.51 and 349,630.76 is: 482,484.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,110.75 : 877,821.51 = 349,630.76 : x
  2. Step 2: Convert to fraction form
    636,110.75/877,821.51 = 349,630.76/x
  3. Step 3: Cross multiply
    636,110.75x = 877,821.51 × 349,630.76
  4. Step 4: Simplify right side
    636,110.75x = 306,913,401,685.65
  5. Step 5: Solve for x
    x = 306,913,401,685.65/636,110.75
  6. Step 6: Final answer
    x = 482,484.22

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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.