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Finding the Fourth Proportional to 646,905.10, 970,357.65 and 366,969.10

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Solution

The fourth proportional to 646,905.10, 970,357.65 and 366,969.10 is: 550,453.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,905.10 : 970,357.65 = 366,969.10 : x
  2. Step 2: Convert to fraction form
    646,905.10/970,357.65 = 366,969.10/x
  3. Step 3: Cross multiply
    646,905.10x = 970,357.65 × 366,969.10
  4. Step 4: Simplify right side
    646,905.10x = 356,091,273,498.62
  5. Step 5: Solve for x
    x = 356,091,273,498.62/646,905.10
  6. Step 6: Final answer
    x = 550,453.65

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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.