Home / 812,156.72-1,120,762.70-449,572.90

Finding the Fourth Proportional to 812,156.72, 1,120,762.70 and 449,572.90

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Solution

The fourth proportional to 812,156.72, 1,120,762.70 and 449,572.90 is: 620,403.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,156.72 : 1,120,762.70 = 449,572.90 : x
  2. Step 2: Convert to fraction form
    812,156.72/1,120,762.70 = 449,572.90/x
  3. Step 3: Cross multiply
    812,156.72x = 1,120,762.70 × 449,572.90
  4. Step 4: Simplify right side
    812,156.72x = 503,864,537,250.83
  5. Step 5: Solve for x
    x = 503,864,537,250.83/812,156.72
  6. Step 6: Final answer
    x = 620,403.09

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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.