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Finding the Fourth Proportional to 636,003.90, 877,685.22 and 349,542.54

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Solution

The fourth proportional to 636,003.90, 877,685.22 and 349,542.54 is: 482,368.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,003.90 : 877,685.22 = 349,542.54 : x
  2. Step 2: Convert to fraction form
    636,003.90/877,685.22 = 349,542.54/x
  3. Step 3: Cross multiply
    636,003.90x = 877,685.22 × 349,542.54
  4. Step 4: Simplify right side
    636,003.90x = 306,788,321,119.26
  5. Step 5: Solve for x
    x = 306,788,321,119.26/636,003.90
  6. Step 6: Final answer
    x = 482,368.62

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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.