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Finding the Fourth Proportional to 553,679.80, 830,519.70 and 301,081.30

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Solution

The fourth proportional to 553,679.80, 830,519.70 and 301,081.30 is: 451,621.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,679.80 : 830,519.70 = 301,081.30 : x
  2. Step 2: Convert to fraction form
    553,679.80/830,519.70 = 301,081.30/x
  3. Step 3: Cross multiply
    553,679.80x = 830,519.70 × 301,081.30
  4. Step 4: Simplify right side
    553,679.80x = 250,053,950,951.61
  5. Step 5: Solve for x
    x = 250,053,950,951.61/553,679.80
  6. Step 6: Final answer
    x = 451,621.95

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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.