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Finding the Fourth Proportional to 647,687.80, 970,656.90 and 433,847.80

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Solution

The fourth proportional to 647,687.80, 970,656.90 and 433,847.80 is: 650,185.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,687.80 : 970,656.90 = 433,847.80 : x
  2. Step 2: Convert to fraction form
    647,687.80/970,656.90 = 433,847.80/x
  3. Step 3: Cross multiply
    647,687.80x = 970,656.90 × 433,847.80
  4. Step 4: Simplify right side
    647,687.80x = 421,117,360,619.82
  5. Step 5: Solve for x
    x = 421,117,360,619.82/647,687.80
  6. Step 6: Final answer
    x = 650,185.72

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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.