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Finding the Fourth Proportional to 646,980.70, 970,471.05 and 646,980.70

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Solution

The fourth proportional to 646,980.70, 970,471.05 and 646,980.70 is: 970,471.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,980.70 : 970,471.05 = 646,980.70 : x
  2. Step 2: Convert to fraction form
    646,980.70/970,471.05 = 646,980.70/x
  3. Step 3: Cross multiply
    646,980.70x = 970,471.05 × 646,980.70
  4. Step 4: Simplify right side
    646,980.70x = 627,876,039,258.74
  5. Step 5: Solve for x
    x = 627,876,039,258.74/646,980.70
  6. Step 6: Final answer
    x = 970,471.05

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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.