Home / 1,280,809.70-1,921,214.55-394,345.70

Finding the Fourth Proportional to 1,280,809.70, 1,921,214.55 and 394,345.70

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Solution

The fourth proportional to 1,280,809.70, 1,921,214.55 and 394,345.70 is: 591,518.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,280,809.70 : 1,921,214.55 = 394,345.70 : x
  2. Step 2: Convert to fraction form
    1,280,809.70/1,921,214.55 = 394,345.70/x
  3. Step 3: Cross multiply
    1,280,809.70x = 1,921,214.55 × 394,345.70
  4. Step 4: Simplify right side
    1,280,809.70x = 757,622,696,569.94
  5. Step 5: Solve for x
    x = 757,622,696,569.94/1,280,809.70
  6. Step 6: Final answer
    x = 591,518.55

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Similar ratio
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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.