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Finding the Fourth Proportional to 631,613.58, 871,616.22 and 345,127.08

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Solution

The fourth proportional to 631,613.58, 871,616.22 and 345,127.08 is: 476,269.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,613.58 : 871,616.22 = 345,127.08 : x
  2. Step 2: Convert to fraction form
    631,613.58/871,616.22 = 345,127.08/x
  3. Step 3: Cross multiply
    631,613.58x = 871,616.22 × 345,127.08
  4. Step 4: Simplify right side
    631,613.58x = 300,818,360,889.24
  5. Step 5: Solve for x
    x = 300,818,360,889.24/631,613.58
  6. Step 6: Final answer
    x = 476,269.62

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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.