Home / 812,113.36-1,120,702.87-449,529.45

Finding the Fourth Proportional to 812,113.36, 1,120,702.87 and 449,529.45

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Solution

The fourth proportional to 812,113.36, 1,120,702.87 and 449,529.45 is: 620,343.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,113.36 : 1,120,702.87 = 449,529.45 : x
  2. Step 2: Convert to fraction form
    812,113.36/1,120,702.87 = 449,529.45/x
  3. Step 3: Cross multiply
    812,113.36x = 1,120,702.87 × 449,529.45
  4. Step 4: Simplify right side
    812,113.36x = 503,788,943,640.70
  5. Step 5: Solve for x
    x = 503,788,943,640.70/812,113.36
  6. Step 6: Final answer
    x = 620,343.13

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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.