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Finding the Fourth Proportional to 719,634.12, 993,133.80 and 397,343.04

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Solution

The fourth proportional to 719,634.12, 993,133.80 and 397,343.04 is: 548,354.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,634.12 : 993,133.80 = 397,343.04 : x
  2. Step 2: Convert to fraction form
    719,634.12/993,133.80 = 397,343.04/x
  3. Step 3: Cross multiply
    719,634.12x = 993,133.80 × 397,343.04
  4. Step 4: Simplify right side
    719,634.12x = 394,614,803,218.75
  5. Step 5: Solve for x
    x = 394,614,803,218.75/719,634.12
  6. Step 6: Final answer
    x = 548,354.77

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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.