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Finding the Fourth Proportional to 720,528.57, 994,333.32 and 393,842.03

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Solution

The fourth proportional to 720,528.57, 994,333.32 and 393,842.03 is: 543,504.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    720,528.57 : 994,333.32 = 393,842.03 : x
  2. Step 2: Convert to fraction form
    720,528.57/994,333.32 = 393,842.03/x
  3. Step 3: Cross multiply
    720,528.57x = 994,333.32 × 393,842.03
  4. Step 4: Simplify right side
    720,528.57x = 391,610,253,245.44
  5. Step 5: Solve for x
    x = 391,610,253,245.44/720,528.57
  6. Step 6: Final answer
    x = 543,504.13

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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.