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Finding the Fourth Proportional to 579,266.82, 799,407.63 and 321,128.37

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Solution

The fourth proportional to 579,266.82, 799,407.63 and 321,128.37 is: 443,167.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,266.82 : 799,407.63 = 321,128.37 : x
  2. Step 2: Convert to fraction form
    579,266.82/799,407.63 = 321,128.37/x
  3. Step 3: Cross multiply
    579,266.82x = 799,407.63 × 321,128.37
  4. Step 4: Simplify right side
    579,266.82x = 256,712,471,435.80
  5. Step 5: Solve for x
    x = 256,712,471,435.80/579,266.82
  6. Step 6: Final answer
    x = 443,167.92

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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.