Home / 840,105.69-1,159,007.11-486,253.73

Finding the Fourth Proportional to 840,105.69, 1,159,007.11 and 486,253.73

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Solution

The fourth proportional to 840,105.69, 1,159,007.11 and 486,253.73 is: 670,834.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    840,105.69 : 1,159,007.11 = 486,253.73 : x
  2. Step 2: Convert to fraction form
    840,105.69/1,159,007.11 = 486,253.73/x
  3. Step 3: Cross multiply
    840,105.69x = 1,159,007.11 × 486,253.73
  4. Step 4: Simplify right side
    840,105.69x = 563,571,530,334.02
  5. Step 5: Solve for x
    x = 563,571,530,334.02/840,105.69
  6. Step 6: Final answer
    x = 670,834.08

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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.