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Finding the Fourth Proportional to 703,020.80, 970,186.46 and 431,238.56

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Solution

The fourth proportional to 703,020.80, 970,186.46 and 431,238.56 is: 595,120.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    703,020.80 : 970,186.46 = 431,238.56 : x
  2. Step 2: Convert to fraction form
    703,020.80/970,186.46 = 431,238.56/x
  3. Step 3: Cross multiply
    703,020.80x = 970,186.46 × 431,238.56
  4. Step 4: Simplify right side
    703,020.80x = 418,381,811,941.90
  5. Step 5: Solve for x
    x = 418,381,811,941.90/703,020.80
  6. Step 6: Final answer
    x = 595,120.10

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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.