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Finding the Fourth Proportional to 647,647.60, 971,471.40 and 622,764.40

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Solution

The fourth proportional to 647,647.60, 971,471.40 and 622,764.40 is: 934,146.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,647.60 : 971,471.40 = 622,764.40 : x
  2. Step 2: Convert to fraction form
    647,647.60/971,471.40 = 622,764.40/x
  3. Step 3: Cross multiply
    647,647.60x = 971,471.40 × 622,764.40
  4. Step 4: Simplify right side
    647,647.60x = 604,997,803,538.16
  5. Step 5: Solve for x
    x = 604,997,803,538.16/647,647.60
  6. Step 6: Final answer
    x = 934,146.60

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Similar ratio
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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.