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Finding the Fourth Proportional to 631,499.76, 871,437.96 and 344,967.12

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Solution

The fourth proportional to 631,499.76, 871,437.96 and 344,967.12 is: 476,037.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,499.76 : 871,437.96 = 344,967.12 : x
  2. Step 2: Convert to fraction form
    631,499.76/871,437.96 = 344,967.12/x
  3. Step 3: Cross multiply
    631,499.76x = 871,437.96 × 344,967.12
  4. Step 4: Simplify right side
    631,499.76x = 300,617,443,319.88
  5. Step 5: Solve for x
    x = 300,617,443,319.88/631,499.76
  6. Step 6: Final answer
    x = 476,037.30

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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.