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Finding the Fourth Proportional to 647,477.70, 971,216.55 and 395,535.30

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Solution

The fourth proportional to 647,477.70, 971,216.55 and 395,535.30 is: 593,302.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,477.70 : 971,216.55 = 395,535.30 : x
  2. Step 2: Convert to fraction form
    647,477.70/971,216.55 = 395,535.30/x
  3. Step 3: Cross multiply
    647,477.70x = 971,216.55 × 395,535.30
  4. Step 4: Simplify right side
    647,477.70x = 384,150,429,469.22
  5. Step 5: Solve for x
    x = 384,150,429,469.22/647,477.70
  6. Step 6: Final answer
    x = 593,302.95

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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.