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Finding the Fourth Proportional to 579,695.62, 799,979.22 and 321,611.72

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Solution

The fourth proportional to 579,695.62, 799,979.22 and 321,611.72 is: 443,823.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,695.62 : 799,979.22 = 321,611.72 : x
  2. Step 2: Convert to fraction form
    579,695.62/799,979.22 = 321,611.72/x
  3. Step 3: Cross multiply
    579,695.62x = 799,979.22 × 321,611.72
  4. Step 4: Simplify right side
    579,695.62x = 257,282,692,908.46
  5. Step 5: Solve for x
    x = 257,282,692,908.46/579,695.62
  6. Step 6: Final answer
    x = 443,823.77

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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.