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Finding the Fourth Proportional to 647,008.60, 970,541.70 and 220,538.20

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Solution

The fourth proportional to 647,008.60, 970,541.70 and 220,538.20 is: 330,817.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,008.60 : 970,541.70 = 220,538.20 : x
  2. Step 2: Convert to fraction form
    647,008.60/970,541.70 = 220,538.20/x
  3. Step 3: Cross multiply
    647,008.60x = 970,541.70 × 220,538.20
  4. Step 4: Simplify right side
    647,008.60x = 214,041,519,542.94
  5. Step 5: Solve for x
    x = 214,041,519,542.94/647,008.60
  6. Step 6: Final answer
    x = 330,817.12

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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.