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Finding the Fourth Proportional to 646,997.70, 970,496.55 and 617,967.30

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Solution

The fourth proportional to 646,997.70, 970,496.55 and 617,967.30 is: 926,950.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,997.70 : 970,496.55 = 617,967.30 : x
  2. Step 2: Convert to fraction form
    646,997.70/970,496.55 = 617,967.30/x
  3. Step 3: Cross multiply
    646,997.70x = 970,496.55 × 617,967.30
  4. Step 4: Simplify right side
    646,997.70x = 599,735,132,662.82
  5. Step 5: Solve for x
    x = 599,735,132,662.82/646,997.70
  6. Step 6: Final answer
    x = 926,950.95

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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.