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Finding the Fourth Proportional to 631,488, 871,453.44 and 363,216

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Solution

The fourth proportional to 631,488, 871,453.44 and 363,216 is: 501,238.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,488 : 871,453.44 = 363,216 : x
  2. Step 2: Convert to fraction form
    631,488/871,453.44 = 363,216/x
  3. Step 3: Cross multiply
    631,488x = 871,453.44 × 363,216
  4. Step 4: Simplify right side
    631,488x = 316,525,832,663.04
  5. Step 5: Solve for x
    x = 316,525,832,663.04/631,488
  6. Step 6: Final answer
    x = 501,238.08

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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.