Home / 1,003,084.57-1,384,408.68-640,749.78

Finding the Fourth Proportional to 1,003,084.57, 1,384,408.68 and 640,749.78

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Solution

The fourth proportional to 1,003,084.57, 1,384,408.68 and 640,749.78 is: 884,331.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,003,084.57 : 1,384,408.68 = 640,749.78 : x
  2. Step 2: Convert to fraction form
    1,003,084.57/1,384,408.68 = 640,749.78/x
  3. Step 3: Cross multiply
    1,003,084.57x = 1,384,408.68 × 640,749.78
  4. Step 4: Simplify right side
    1,003,084.57x = 887,059,557,140.09
  5. Step 5: Solve for x
    x = 887,059,557,140.09/1,003,084.57
  6. Step 6: Final answer
    x = 884,331.77

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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.