Home / 690,917.14-1,035,589.56-420,448.76

Finding the Fourth Proportional to 690,917.14, 1,035,589.56 and 420,448.76

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Solution

The fourth proportional to 690,917.14, 1,035,589.56 and 420,448.76 is: 630,194.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,917.14 : 1,035,589.56 = 420,448.76 : x
  2. Step 2: Convert to fraction form
    690,917.14/1,035,589.56 = 420,448.76/x
  3. Step 3: Cross multiply
    690,917.14x = 1,035,589.56 × 420,448.76
  4. Step 4: Simplify right side
    690,917.14x = 435,412,343,499.78
  5. Step 5: Solve for x
    x = 435,412,343,499.78/690,917.14
  6. Step 6: Final answer
    x = 630,194.73

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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.