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Finding the Fourth Proportional to 647,634.80, 971,452.20 and 367,698.80

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Solution

The fourth proportional to 647,634.80, 971,452.20 and 367,698.80 is: 551,548.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,634.80 : 971,452.20 = 367,698.80 : x
  2. Step 2: Convert to fraction form
    647,634.80/971,452.20 = 367,698.80/x
  3. Step 3: Cross multiply
    647,634.80x = 971,452.20 × 367,698.80
  4. Step 4: Simplify right side
    647,634.80x = 357,201,808,197.36
  5. Step 5: Solve for x
    x = 357,201,808,197.36/647,634.80
  6. Step 6: Final answer
    x = 551,548.20

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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.