Home / 812,645.88-1,120,894.11-557,554.20

Finding the Fourth Proportional to 812,645.88, 1,120,894.11 and 557,554.20

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Solution

The fourth proportional to 812,645.88, 1,120,894.11 and 557,554.20 is: 769,042.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,645.88 : 1,120,894.11 = 557,554.20 : x
  2. Step 2: Convert to fraction form
    812,645.88/1,120,894.11 = 557,554.20/x
  3. Step 3: Cross multiply
    812,645.88x = 1,120,894.11 × 557,554.20
  4. Step 4: Simplify right side
    812,645.88x = 624,959,218,785.76
  5. Step 5: Solve for x
    x = 624,959,218,785.76/812,645.88
  6. Step 6: Final answer
    x = 769,042.50

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Double scale
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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.