Home / 690,997.50-1,036,639.62-291,641.58

Finding the Fourth Proportional to 690,997.50, 1,036,639.62 and 291,641.58

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Solution

The fourth proportional to 690,997.50, 1,036,639.62 and 291,641.58 is: 437,522.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,997.50 : 1,036,639.62 = 291,641.58 : x
  2. Step 2: Convert to fraction form
    690,997.50/1,036,639.62 = 291,641.58/x
  3. Step 3: Cross multiply
    690,997.50x = 1,036,639.62 × 291,641.58
  4. Step 4: Simplify right side
    690,997.50x = 302,327,216,667.40
  5. Step 5: Solve for x
    x = 302,327,216,667.40/690,997.50
  6. Step 6: Final answer
    x = 437,522.88

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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.