Home / 1,221,240.49-1,685,513.66-677,551.38

Finding the Fourth Proportional to 1,221,240.49, 1,685,513.66 and 677,551.38

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Solution

The fourth proportional to 1,221,240.49, 1,685,513.66 and 677,551.38 is: 935,132.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,221,240.49 : 1,685,513.66 = 677,551.38 : x
  2. Step 2: Convert to fraction form
    1,221,240.49/1,685,513.66 = 677,551.38/x
  3. Step 3: Cross multiply
    1,221,240.49x = 1,685,513.66 × 677,551.38
  4. Step 4: Simplify right side
    1,221,240.49x = 1,142,022,109,925.66
  5. Step 5: Solve for x
    x = 1,142,022,109,925.66/1,221,240.49
  6. Step 6: Final answer
    x = 935,132.86

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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.