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Finding the Fourth Proportional to 720,707.46, 994,570.74 and 414,843.90

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Solution

The fourth proportional to 720,707.46, 994,570.74 and 414,843.90 is: 572,481.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    720,707.46 : 994,570.74 = 414,843.90 : x
  2. Step 2: Convert to fraction form
    720,707.46/994,570.74 = 414,843.90/x
  3. Step 3: Cross multiply
    720,707.46x = 994,570.74 × 414,843.90
  4. Step 4: Simplify right side
    720,707.46x = 412,591,604,607.49
  5. Step 5: Solve for x
    x = 412,591,604,607.49/720,707.46
  6. Step 6: Final answer
    x = 572,481.38

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Double scale
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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.