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Finding the Fourth Proportional to 590,679.28, 815,137.38 and 322,407.28

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Solution

The fourth proportional to 590,679.28, 815,137.38 and 322,407.28 is: 444,922.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    590,679.28 : 815,137.38 = 322,407.28 : x
  2. Step 2: Convert to fraction form
    590,679.28/815,137.38 = 322,407.28/x
  3. Step 3: Cross multiply
    590,679.28x = 815,137.38 × 322,407.28
  4. Step 4: Simplify right side
    590,679.28x = 262,806,225,512.13
  5. Step 5: Solve for x
    x = 262,806,225,512.13/590,679.28
  6. Step 6: Final answer
    x = 444,922.03

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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.