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Finding the Fourth Proportional to 579,468.64, 799,748.72 and 321,402.64

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Solution

The fourth proportional to 579,468.64, 799,748.72 and 321,402.64 is: 443,581.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,468.64 : 799,748.72 = 321,402.64 : x
  2. Step 2: Convert to fraction form
    579,468.64/799,748.72 = 321,402.64/x
  3. Step 3: Cross multiply
    579,468.64x = 799,748.72 × 321,402.64
  4. Step 4: Simplify right side
    579,468.64x = 257,041,349,944.62
  5. Step 5: Solve for x
    x = 257,041,349,944.62/579,468.64
  6. Step 6: Final answer
    x = 443,581.12

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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.