Home / 812,341.55-1,121,072.73-449,805.40

Finding the Fourth Proportional to 812,341.55, 1,121,072.73 and 449,805.40

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Solution

The fourth proportional to 812,341.55, 1,121,072.73 and 449,805.40 is: 620,754.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,341.55 : 1,121,072.73 = 449,805.40 : x
  2. Step 2: Convert to fraction form
    812,341.55/1,121,072.73 = 449,805.40/x
  3. Step 3: Cross multiply
    812,341.55x = 1,121,072.73 × 449,805.40
  4. Step 4: Simplify right side
    812,341.55x = 504,264,567,746.74
  5. Step 5: Solve for x
    x = 504,264,567,746.74/812,341.55
  6. Step 6: Final answer
    x = 620,754.37

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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.