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Finding the Fourth Proportional to 647,363.80, 971,337.30 and 310,274.20

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Solution

The fourth proportional to 647,363.80, 971,337.30 and 310,274.20 is: 465,551.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,363.80 : 971,337.30 = 310,274.20 : x
  2. Step 2: Convert to fraction form
    647,363.80/971,337.30 = 310,274.20/x
  3. Step 3: Cross multiply
    647,363.80x = 971,337.30 × 310,274.20
  4. Step 4: Simplify right side
    647,363.80x = 301,380,903,687.66
  5. Step 5: Solve for x
    x = 301,380,903,687.66/647,363.80
  6. Step 6: Final answer
    x = 465,551.06

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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.