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Finding the Fourth Proportional to 631,437.66, 871,424.06 and 359,529.30

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Solution

The fourth proportional to 631,437.66, 871,424.06 and 359,529.30 is: 496,173.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,437.66 : 871,424.06 = 359,529.30 : x
  2. Step 2: Convert to fraction form
    631,437.66/871,424.06 = 359,529.30/x
  3. Step 3: Cross multiply
    631,437.66x = 871,424.06 × 359,529.30
  4. Step 4: Simplify right side
    631,437.66x = 313,302,480,497.31
  5. Step 5: Solve for x
    x = 313,302,480,497.31/631,437.66
  6. Step 6: Final answer
    x = 496,173.26

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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.