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Finding the Fourth Proportional to 700,680.74, 966,939.39 and 378,390.81

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Solution

The fourth proportional to 700,680.74, 966,939.39 and 378,390.81 is: 522,179.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    700,680.74 : 966,939.39 = 378,390.81 : x
  2. Step 2: Convert to fraction form
    700,680.74/966,939.39 = 378,390.81/x
  3. Step 3: Cross multiply
    700,680.74x = 966,939.39 × 378,390.81
  4. Step 4: Simplify right side
    700,680.74x = 365,880,979,003.01
  5. Step 5: Solve for x
    x = 365,880,979,003.01/700,680.74
  6. Step 6: Final answer
    x = 522,179.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.