Home / 812,153.88-1,212,418.17-705,894.84

Finding the Fourth Proportional to 812,153.88, 1,212,418.17 and 705,894.84

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Solution

The fourth proportional to 812,153.88, 1,212,418.17 and 705,894.84 is: 1,053,790.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,153.88 : 1,212,418.17 = 705,894.84 : x
  2. Step 2: Convert to fraction form
    812,153.88/1,212,418.17 = 705,894.84/x
  3. Step 3: Cross multiply
    812,153.88x = 1,212,418.17 × 705,894.84
  4. Step 4: Simplify right side
    812,153.88x = 855,839,730,125.24
  5. Step 5: Solve for x
    x = 855,839,730,125.24/812,153.88
  6. Step 6: Final answer
    x = 1,053,790.11

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.