Home / 690,665.15-1,036,704.68-570,338.72

Finding the Fourth Proportional to 690,665.15, 1,036,704.68 and 570,338.72

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Solution

The fourth proportional to 690,665.15, 1,036,704.68 and 570,338.72 is: 856,091.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,665.15 : 1,036,704.68 = 570,338.72 : x
  2. Step 2: Convert to fraction form
    690,665.15/1,036,704.68 = 570,338.72/x
  3. Step 3: Cross multiply
    690,665.15x = 1,036,704.68 × 570,338.72
  4. Step 4: Simplify right side
    690,665.15x = 591,272,821,408.56
  5. Step 5: Solve for x
    x = 591,272,821,408.56/690,665.15
  6. Step 6: Final answer
    x = 856,091.87

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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.