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Finding the Fourth Proportional to 631,530.59, 871,510.73 and 345,052.85

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Solution

The fourth proportional to 631,530.59, 871,510.73 and 345,052.85 is: 476,172.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,530.59 : 871,510.73 = 345,052.85 : x
  2. Step 2: Convert to fraction form
    631,530.59/871,510.73 = 345,052.85/x
  3. Step 3: Cross multiply
    631,530.59x = 871,510.73 × 345,052.85
  4. Step 4: Simplify right side
    631,530.59x = 300,717,255,109.26
  5. Step 5: Solve for x
    x = 300,717,255,109.26/631,530.59
  6. Step 6: Final answer
    x = 476,172.12

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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.