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Finding the Fourth Proportional to 647,630.19, 971,526.67 and 347,698.51

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Solution

The fourth proportional to 647,630.19, 971,526.67 and 347,698.51 is: 521,591.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,630.19 : 971,526.67 = 347,698.51 : x
  2. Step 2: Convert to fraction form
    647,630.19/971,526.67 = 347,698.51/x
  3. Step 3: Cross multiply
    647,630.19x = 971,526.67 × 347,698.51
  4. Step 4: Simplify right side
    647,630.19x = 337,798,375,584.26
  5. Step 5: Solve for x
    x = 337,798,375,584.26/647,630.19
  6. Step 6: Final answer
    x = 521,591.46

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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.