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Finding the Fourth Proportional to 631,510.62, 871,497.19 and 345,048.45

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Solution

The fourth proportional to 631,510.62, 871,497.19 and 345,048.45 is: 476,173.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,510.62 : 871,497.19 = 345,048.45 : x
  2. Step 2: Convert to fraction form
    631,510.62/871,497.19 = 345,048.45/x
  3. Step 3: Cross multiply
    631,510.62x = 871,497.19 × 345,048.45
  4. Step 4: Simplify right side
    631,510.62x = 300,708,754,588.86
  5. Step 5: Solve for x
    x = 300,708,754,588.86/631,510.62
  6. Step 6: Final answer
    x = 476,173.71

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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.