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Finding the Fourth Proportional to 646,879.10, 970,318.65 and 366,943.10

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Solution

The fourth proportional to 646,879.10, 970,318.65 and 366,943.10 is: 550,414.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,879.10 : 970,318.65 = 366,943.10 : x
  2. Step 2: Convert to fraction form
    646,879.10/970,318.65 = 366,943.10/x
  3. Step 3: Cross multiply
    646,879.10x = 970,318.65 × 366,943.10
  4. Step 4: Simplify right side
    646,879.10x = 356,051,733,418.82
  5. Step 5: Solve for x
    x = 356,051,733,418.82/646,879.10
  6. Step 6: Final answer
    x = 550,414.65

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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.