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Finding the Fourth Proportional to 659,419.20, 988,934.40 and 259,927.20

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Solution

The fourth proportional to 659,419.20, 988,934.40 and 259,927.20 is: 389,814.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,419.20 : 988,934.40 = 259,927.20 : x
  2. Step 2: Convert to fraction form
    659,419.20/988,934.40 = 259,927.20/x
  3. Step 3: Cross multiply
    659,419.20x = 988,934.40 × 259,927.20
  4. Step 4: Simplify right side
    659,419.20x = 257,050,949,575.68
  5. Step 5: Solve for x
    x = 257,050,949,575.68/659,419.20
  6. Step 6: Final answer
    x = 389,814.17

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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.