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Finding the Fourth Proportional to 720,010.74, 993,608.46 and 397,743.24

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Solution

The fourth proportional to 720,010.74, 993,608.46 and 397,743.24 is: 548,882.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    720,010.74 : 993,608.46 = 397,743.24 : x
  2. Step 2: Convert to fraction form
    720,010.74/993,608.46 = 397,743.24/x
  3. Step 3: Cross multiply
    720,010.74x = 993,608.46 × 397,743.24
  4. Step 4: Simplify right side
    720,010.74x = 395,201,048,171.81
  5. Step 5: Solve for x
    x = 395,201,048,171.81/720,010.74
  6. Step 6: Final answer
    x = 548,882.16

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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.