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Finding the Fourth Proportional to 655,362.15, 982,586.34 and 290,425.05

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Solution

The fourth proportional to 655,362.15, 982,586.34 and 290,425.05 is: 435,435.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,362.15 : 982,586.34 = 290,425.05 : x
  2. Step 2: Convert to fraction form
    655,362.15/982,586.34 = 290,425.05/x
  3. Step 3: Cross multiply
    655,362.15x = 982,586.34 × 290,425.05
  4. Step 4: Simplify right side
    655,362.15x = 285,367,686,923.82
  5. Step 5: Solve for x
    x = 285,367,686,923.82/655,362.15
  6. Step 6: Final answer
    x = 435,435.11

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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.