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Finding the Fourth Proportional to 521,535.64, 719,694.30 and 320,292.76

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Solution

The fourth proportional to 521,535.64, 719,694.30 and 320,292.76 is: 441,988.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,535.64 : 719,694.30 = 320,292.76 : x
  2. Step 2: Convert to fraction form
    521,535.64/719,694.30 = 320,292.76/x
  3. Step 3: Cross multiply
    521,535.64x = 719,694.30 × 320,292.76
  4. Step 4: Simplify right side
    521,535.64x = 230,512,873,703.27
  5. Step 5: Solve for x
    x = 230,512,873,703.27/521,535.64
  6. Step 6: Final answer
    x = 441,988.73

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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.