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Finding the Fourth Proportional to 631,357.20, 871,291.62 and 344,881.98

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Solution

The fourth proportional to 631,357.20, 871,291.62 and 344,881.98 is: 475,947.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,357.20 : 871,291.62 = 344,881.98 : x
  2. Step 2: Convert to fraction form
    631,357.20/871,291.62 = 344,881.98/x
  3. Step 3: Cross multiply
    631,357.20x = 871,291.62 × 344,881.98
  4. Step 4: Simplify right side
    631,357.20x = 300,492,779,063.01
  5. Step 5: Solve for x
    x = 300,492,779,063.01/631,357.20
  6. Step 6: Final answer
    x = 475,947.34

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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.