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Finding the Fourth Proportional to 519,630.40, 779,704.80 and 295,163.20

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Solution

The fourth proportional to 519,630.40, 779,704.80 and 295,163.20 is: 442,892.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,630.40 : 779,704.80 = 295,163.20 : x
  2. Step 2: Convert to fraction form
    519,630.40/779,704.80 = 295,163.20/x
  3. Step 3: Cross multiply
    519,630.40x = 779,704.80 × 295,163.20
  4. Step 4: Simplify right side
    519,630.40x = 230,140,163,823.36
  5. Step 5: Solve for x
    x = 230,140,163,823.36/519,630.40
  6. Step 6: Final answer
    x = 442,892.03

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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.