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Finding the Fourth Proportional to 631,740.52, 871,799.88 and 345,260.53

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Solution

The fourth proportional to 631,740.52, 871,799.88 and 345,260.53 is: 476,458.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,740.52 : 871,799.88 = 345,260.53 : x
  2. Step 2: Convert to fraction form
    631,740.52/871,799.88 = 345,260.53/x
  3. Step 3: Cross multiply
    631,740.52x = 871,799.88 × 345,260.53
  4. Step 4: Simplify right side
    631,740.52x = 300,998,088,622.74
  5. Step 5: Solve for x
    x = 300,998,088,622.74/631,740.52
  6. Step 6: Final answer
    x = 476,458.42

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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.