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Finding the Fourth Proportional to 631,483.74, 871,460.10 and 345,021.57

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Solution

The fourth proportional to 631,483.74, 871,460.10 and 345,021.57 is: 476,136.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,483.74 : 871,460.10 = 345,021.57 : x
  2. Step 2: Convert to fraction form
    631,483.74/871,460.10 = 345,021.57/x
  3. Step 3: Cross multiply
    631,483.74x = 871,460.10 × 345,021.57
  4. Step 4: Simplify right side
    631,483.74x = 300,672,531,894.36
  5. Step 5: Solve for x
    x = 300,672,531,894.36/631,483.74
  6. Step 6: Final answer
    x = 476,136.62

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1.5x scale

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.