Home / 813,043.26-1,219,368.87-339,471.90

Finding the Fourth Proportional to 813,043.26, 1,219,368.87 and 339,471.90

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Solution

The fourth proportional to 813,043.26, 1,219,368.87 and 339,471.90 is: 509,126.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    813,043.26 : 1,219,368.87 = 339,471.90 : x
  2. Step 2: Convert to fraction form
    813,043.26/1,219,368.87 = 339,471.90/x
  3. Step 3: Cross multiply
    813,043.26x = 1,219,368.87 × 339,471.90
  4. Step 4: Simplify right side
    813,043.26x = 413,941,467,099.75
  5. Step 5: Solve for x
    x = 413,941,467,099.75/813,043.26
  6. Step 6: Final answer
    x = 509,126.01

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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.