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Finding the Fourth Proportional to 631,270.10, 871,152.73 and 344,790.86

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Solution

The fourth proportional to 631,270.10, 871,152.73 and 344,790.86 is: 475,811.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,270.10 : 871,152.73 = 344,790.86 : x
  2. Step 2: Convert to fraction form
    631,270.10/871,152.73 = 344,790.86/x
  3. Step 3: Cross multiply
    631,270.10x = 871,152.73 × 344,790.86
  4. Step 4: Simplify right side
    631,270.10x = 300,365,498,968.05
  5. Step 5: Solve for x
    x = 300,365,498,968.05/631,270.10
  6. Step 6: Final answer
    x = 475,811.38

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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.