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Finding the Fourth Proportional to 553,781.70, 830,672.55 and 301,839.30

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Solution

The fourth proportional to 553,781.70, 830,672.55 and 301,839.30 is: 452,758.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,781.70 : 830,672.55 = 301,839.30 : x
  2. Step 2: Convert to fraction form
    553,781.70/830,672.55 = 301,839.30/x
  3. Step 3: Cross multiply
    553,781.70x = 830,672.55 × 301,839.30
  4. Step 4: Simplify right side
    553,781.70x = 250,729,621,021.22
  5. Step 5: Solve for x
    x = 250,729,621,021.22/553,781.70
  6. Step 6: Final answer
    x = 452,758.95

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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.