Home / 1,225,231.28-1,690,571.40-715,835.24

Finding the Fourth Proportional to 1,225,231.28, 1,690,571.40 and 715,835.24

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Solution

The fourth proportional to 1,225,231.28, 1,690,571.40 and 715,835.24 is: 987,707.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,225,231.28 : 1,690,571.40 = 715,835.24 : x
  2. Step 2: Convert to fraction form
    1,225,231.28/1,690,571.40 = 715,835.24/x
  3. Step 3: Cross multiply
    1,225,231.28x = 1,690,571.40 × 715,835.24
  4. Step 4: Simplify right side
    1,225,231.28x = 1,210,170,583,856.14
  5. Step 5: Solve for x
    x = 1,210,170,583,856.14/1,225,231.28
  6. Step 6: Final answer
    x = 987,707.87

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.