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Finding the Fourth Proportional to 631,506.92, 871,538.74 and 345,069.45

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Solution

The fourth proportional to 631,506.92, 871,538.74 and 345,069.45 is: 476,228.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,506.92 : 871,538.74 = 345,069.45 : x
  2. Step 2: Convert to fraction form
    631,506.92/871,538.74 = 345,069.45/x
  3. Step 3: Cross multiply
    631,506.92x = 871,538.74 × 345,069.45
  4. Step 4: Simplify right side
    631,506.92x = 300,741,392,802.82
  5. Step 5: Solve for x
    x = 300,741,392,802.82/631,506.92
  6. Step 6: Final answer
    x = 476,228.19

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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.