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Finding the Fourth Proportional to 720,069.68, 993,704.46 and 397,773.02

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Solution

The fourth proportional to 720,069.68, 993,704.46 and 397,773.02 is: 548,931.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    720,069.68 : 993,704.46 = 397,773.02 : x
  2. Step 2: Convert to fraction form
    720,069.68/993,704.46 = 397,773.02/x
  3. Step 3: Cross multiply
    720,069.68x = 993,704.46 × 397,773.02
  4. Step 4: Simplify right side
    720,069.68x = 395,268,824,041.67
  5. Step 5: Solve for x
    x = 395,268,824,041.67/720,069.68
  6. Step 6: Final answer
    x = 548,931.35

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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.