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Finding the Fourth Proportional to 631,490.99, 871,458.41 and 359,559

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Solution

The fourth proportional to 631,490.99, 871,458.41 and 359,559 is: 496,191.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,490.99 : 871,458.41 = 359,559 : x
  2. Step 2: Convert to fraction form
    631,490.99/871,458.41 = 359,559/x
  3. Step 3: Cross multiply
    631,490.99x = 871,458.41 × 359,559
  4. Step 4: Simplify right side
    631,490.99x = 313,340,715,340.09
  5. Step 5: Solve for x
    x = 313,340,715,340.09/631,490.99
  6. Step 6: Final answer
    x = 496,191.91

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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.