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Finding the Fourth Proportional to 703,218.98, 970,384.52 and 397,321.88

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Solution

The fourth proportional to 703,218.98, 970,384.52 and 397,321.88 is: 548,271.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    703,218.98 : 970,384.52 = 397,321.88 : x
  2. Step 2: Convert to fraction form
    703,218.98/970,384.52 = 397,321.88/x
  3. Step 3: Cross multiply
    703,218.98x = 970,384.52 × 397,321.88
  4. Step 4: Simplify right side
    703,218.98x = 385,554,997,950.68
  5. Step 5: Solve for x
    x = 385,554,997,950.68/703,218.98
  6. Step 6: Final answer
    x = 548,271.60

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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.