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Finding the Fourth Proportional to 553,012.57, 828,190.05 and 315,635.59

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Solution

The fourth proportional to 553,012.57, 828,190.05 and 315,635.59 is: 472,694.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,012.57 : 828,190.05 = 315,635.59 : x
  2. Step 2: Convert to fraction form
    553,012.57/828,190.05 = 315,635.59/x
  3. Step 3: Cross multiply
    553,012.57x = 828,190.05 × 315,635.59
  4. Step 4: Simplify right side
    553,012.57x = 261,406,255,063.88
  5. Step 5: Solve for x
    x = 261,406,255,063.88/553,012.57
  6. Step 6: Final answer
    x = 472,694.96

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.