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Finding the Fourth Proportional to 521,018.20, 780,944.10 and 296,486.20

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Solution

The fourth proportional to 521,018.20, 780,944.10 and 296,486.20 is: 444,397.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,018.20 : 780,944.10 = 296,486.20 : x
  2. Step 2: Convert to fraction form
    521,018.20/780,944.10 = 296,486.20/x
  3. Step 3: Cross multiply
    521,018.20x = 780,944.10 × 296,486.20
  4. Step 4: Simplify right side
    521,018.20x = 231,539,148,621.42
  5. Step 5: Solve for x
    x = 231,539,148,621.42/521,018.20
  6. Step 6: Final answer
    x = 444,397.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.