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Finding the Fourth Proportional to 636,246.90, 877,984.11 and 349,766.91

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Solution

The fourth proportional to 636,246.90, 877,984.11 and 349,766.91 is: 482,658.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,246.90 : 877,984.11 = 349,766.91 : x
  2. Step 2: Convert to fraction form
    636,246.90/877,984.11 = 349,766.91/x
  3. Step 3: Cross multiply
    636,246.90x = 877,984.11 × 349,766.91
  4. Step 4: Simplify right side
    636,246.90x = 307,089,789,183.80
  5. Step 5: Solve for x
    x = 307,089,789,183.80/636,246.90
  6. Step 6: Final answer
    x = 482,658.21

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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.