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Finding the Fourth Proportional to 631,511.12, 871,497.89 and 345,048.95

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Solution

The fourth proportional to 631,511.12, 871,497.89 and 345,048.95 is: 476,174.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,511.12 : 871,497.89 = 345,048.95 : x
  2. Step 2: Convert to fraction form
    631,511.12/871,497.89 = 345,048.95/x
  3. Step 3: Cross multiply
    631,511.12x = 871,497.89 × 345,048.95
  4. Step 4: Simplify right side
    631,511.12x = 300,709,425,788.98
  5. Step 5: Solve for x
    x = 300,709,425,788.98/631,511.12
  6. Step 6: Final answer
    x = 476,174.40

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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.