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Finding the Fourth Proportional to 647,542.20, 971,313.30 and 606,070.20

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Solution

The fourth proportional to 647,542.20, 971,313.30 and 606,070.20 is: 909,105.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,542.20 : 971,313.30 = 606,070.20 : x
  2. Step 2: Convert to fraction form
    647,542.20/971,313.30 = 606,070.20/x
  3. Step 3: Cross multiply
    647,542.20x = 971,313.30 × 606,070.20
  4. Step 4: Simplify right side
    647,542.20x = 588,684,045,993.66
  5. Step 5: Solve for x
    x = 588,684,045,993.66/647,542.20
  6. Step 6: Final answer
    x = 909,105.30

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Double scale
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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.