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Finding the Fourth Proportional to 636,028.92, 877,743 and 349,570.80

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Solution

The fourth proportional to 636,028.92, 877,743 and 349,570.80 is: 482,420.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,028.92 : 877,743 = 349,570.80 : x
  2. Step 2: Convert to fraction form
    636,028.92/877,743 = 349,570.80/x
  3. Step 3: Cross multiply
    636,028.92x = 877,743 × 349,570.80
  4. Step 4: Simplify right side
    636,028.92x = 306,833,322,704.40
  5. Step 5: Solve for x
    x = 306,833,322,704.40/636,028.92
  6. Step 6: Final answer
    x = 482,420.39

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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.