Home / 813,020.76-1,219,335.12-339,449.40

Finding the Fourth Proportional to 813,020.76, 1,219,335.12 and 339,449.40

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Solution

The fourth proportional to 813,020.76, 1,219,335.12 and 339,449.40 is: 509,092.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    813,020.76 : 1,219,335.12 = 339,449.40 : x
  2. Step 2: Convert to fraction form
    813,020.76/1,219,335.12 = 339,449.40/x
  3. Step 3: Cross multiply
    813,020.76x = 1,219,335.12 × 339,449.40
  4. Step 4: Simplify right side
    813,020.76x = 413,902,574,882.93
  5. Step 5: Solve for x
    x = 413,902,574,882.93/813,020.76
  6. Step 6: Final answer
    x = 509,092.26

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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.