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Finding the Fourth Proportional to 647,500.80, 971,530.65 and 347,630.91

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Solution

The fourth proportional to 647,500.80, 971,530.65 and 347,630.91 is: 521,596.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,500.80 : 971,530.65 = 347,630.91 : x
  2. Step 2: Convert to fraction form
    647,500.80/971,530.65 = 347,630.91/x
  3. Step 3: Cross multiply
    647,500.80x = 971,530.65 × 347,630.91
  4. Step 4: Simplify right side
    647,500.80x = 337,734,083,952.39
  5. Step 5: Solve for x
    x = 337,734,083,952.39/647,500.80
  6. Step 6: Final answer
    x = 521,596.40

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1.5x scale

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.