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Finding the Fourth Proportional to 720,344.42, 994,089.56 and 393,677.64

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Solution

The fourth proportional to 720,344.42, 994,089.56 and 393,677.64 is: 543,282.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    720,344.42 : 994,089.56 = 393,677.64 : x
  2. Step 2: Convert to fraction form
    720,344.42/994,089.56 = 393,677.64/x
  3. Step 3: Cross multiply
    720,344.42x = 994,089.56 × 393,677.64
  4. Step 4: Simplify right side
    720,344.42x = 391,350,834,971.36
  5. Step 5: Solve for x
    x = 391,350,834,971.36/720,344.42
  6. Step 6: Final answer
    x = 543,282.94

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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.