Home / 1,224,013.62-1,689,116.39-680,139.51

Finding the Fourth Proportional to 1,224,013.62, 1,689,116.39 and 680,139.51

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Solution

The fourth proportional to 1,224,013.62, 1,689,116.39 and 680,139.51 is: 938,580.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,224,013.62 : 1,689,116.39 = 680,139.51 : x
  2. Step 2: Convert to fraction form
    1,224,013.62/1,689,116.39 = 680,139.51/x
  3. Step 3: Cross multiply
    1,224,013.62x = 1,689,116.39 × 680,139.51
  4. Step 4: Simplify right side
    1,224,013.62x = 1,148,834,790,426.87
  5. Step 5: Solve for x
    x = 1,148,834,790,426.87/1,224,013.62
  6. Step 6: Final answer
    x = 938,580.07

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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.