Home / 813,122.48-1,219,463.40-339,708.80

Finding the Fourth Proportional to 813,122.48, 1,219,463.40 and 339,708.80

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Solution

The fourth proportional to 813,122.48, 1,219,463.40 and 339,708.80 is: 509,471.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    813,122.48 : 1,219,463.40 = 339,708.80 : x
  2. Step 2: Convert to fraction form
    813,122.48/1,219,463.40 = 339,708.80/x
  3. Step 3: Cross multiply
    813,122.48x = 1,219,463.40 × 339,708.80
  4. Step 4: Simplify right side
    813,122.48x = 414,262,448,257.92
  5. Step 5: Solve for x
    x = 414,262,448,257.92/813,122.48
  6. Step 6: Final answer
    x = 509,471.15

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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.