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Finding the Fourth Proportional to 553,399.70, 830,099.55 and 488,081.30

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Solution

The fourth proportional to 553,399.70, 830,099.55 and 488,081.30 is: 732,121.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,399.70 : 830,099.55 = 488,081.30 : x
  2. Step 2: Convert to fraction form
    553,399.70/830,099.55 = 488,081.30/x
  3. Step 3: Cross multiply
    553,399.70x = 830,099.55 × 488,081.30
  4. Step 4: Simplify right side
    553,399.70x = 405,156,067,493.42
  5. Step 5: Solve for x
    x = 405,156,067,493.42/553,399.70
  6. Step 6: Final answer
    x = 732,121.95

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Similar ratio
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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.