Home / 812,433.14-1,218,551.29-413,360.31

Finding the Fourth Proportional to 812,433.14, 1,218,551.29 and 413,360.31

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Solution

The fourth proportional to 812,433.14, 1,218,551.29 and 413,360.31 is: 619,990.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,433.14 : 1,218,551.29 = 413,360.31 : x
  2. Step 2: Convert to fraction form
    812,433.14/1,218,551.29 = 413,360.31/x
  3. Step 3: Cross multiply
    812,433.14x = 1,218,551.29 × 413,360.31
  4. Step 4: Simplify right side
    812,433.14x = 503,700,744,846.62
  5. Step 5: Solve for x
    x = 503,700,744,846.62/812,433.14
  6. Step 6: Final answer
    x = 619,990.40

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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.