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Finding the Fourth Proportional to 703,541.16, 970,890.30 and 397,672.20

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Solution

The fourth proportional to 703,541.16, 970,890.30 and 397,672.20 is: 548,789.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    703,541.16 : 970,890.30 = 397,672.20 : x
  2. Step 2: Convert to fraction form
    703,541.16/970,890.30 = 397,672.20/x
  3. Step 3: Cross multiply
    703,541.16x = 970,890.30 × 397,672.20
  4. Step 4: Simplify right side
    703,541.16x = 386,096,081,559.66
  5. Step 5: Solve for x
    x = 386,096,081,559.66/703,541.16
  6. Step 6: Final answer
    x = 548,789.61

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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.