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Finding the Fourth Proportional to 628,997.64, 867,881.34 and 374,299.08

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Solution

The fourth proportional to 628,997.64, 867,881.34 and 374,299.08 is: 516,452.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,997.64 : 867,881.34 = 374,299.08 : x
  2. Step 2: Convert to fraction form
    628,997.64/867,881.34 = 374,299.08/x
  3. Step 3: Cross multiply
    628,997.64x = 867,881.34 × 374,299.08
  4. Step 4: Simplify right side
    628,997.64x = 324,847,187,111.17
  5. Step 5: Solve for x
    x = 324,847,187,111.17/628,997.64
  6. Step 6: Final answer
    x = 516,452.16

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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.