Home / 812,008.98-1,120,555.65-449,411.21

Finding the Fourth Proportional to 812,008.98, 1,120,555.65 and 449,411.21

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Solution

The fourth proportional to 812,008.98, 1,120,555.65 and 449,411.21 is: 620,178.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,008.98 : 1,120,555.65 = 449,411.21 : x
  2. Step 2: Convert to fraction form
    812,008.98/1,120,555.65 = 449,411.21/x
  3. Step 3: Cross multiply
    812,008.98x = 1,120,555.65 × 449,411.21
  4. Step 4: Simplify right side
    812,008.98x = 503,590,270,183.09
  5. Step 5: Solve for x
    x = 503,590,270,183.09/812,008.98
  6. Step 6: Final answer
    x = 620,178.21

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1.5x scale

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.