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Finding the Fourth Proportional to 703,059.31, 970,281.54 and 397,191.77

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Solution

The fourth proportional to 703,059.31, 970,281.54 and 397,191.77 is: 548,158.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    703,059.31 : 970,281.54 = 397,191.77 : x
  2. Step 2: Convert to fraction form
    703,059.31/970,281.54 = 397,191.77/x
  3. Step 3: Cross multiply
    703,059.31x = 970,281.54 × 397,191.77
  4. Step 4: Simplify right side
    703,059.31x = 385,387,835,433.56
  5. Step 5: Solve for x
    x = 385,387,835,433.56/703,059.31
  6. Step 6: Final answer
    x = 548,158.36

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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.