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Finding the Fourth Proportional to 521,519.64, 719,672.22 and 320,276.76

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Solution

The fourth proportional to 521,519.64, 719,672.22 and 320,276.76 is: 441,966.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,519.64 : 719,672.22 = 320,276.76 : x
  2. Step 2: Convert to fraction form
    521,519.64/719,672.22 = 320,276.76/x
  3. Step 3: Cross multiply
    521,519.64x = 719,672.22 × 320,276.76
  4. Step 4: Simplify right side
    521,519.64x = 230,494,286,883.61
  5. Step 5: Solve for x
    x = 230,494,286,883.61/521,519.64
  6. Step 6: Final answer
    x = 441,966.65

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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.