Home / 1,913,208.92-2,640,128.65-1,188,041.06

Finding the Fourth Proportional to 1,913,208.92, 2,640,128.65 and 1,188,041.06

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Solution

The fourth proportional to 1,913,208.92, 2,640,128.65 and 1,188,041.06 is: 1,639,434.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,913,208.92 : 2,640,128.65 = 1,188,041.06 : x
  2. Step 2: Convert to fraction form
    1,913,208.92/2,640,128.65 = 1,188,041.06/x
  3. Step 3: Cross multiply
    1,913,208.92x = 2,640,128.65 × 1,188,041.06
  4. Step 4: Simplify right side
    1,913,208.92x = 3,136,581,239,882.37
  5. Step 5: Solve for x
    x = 3,136,581,239,882.37/1,913,208.92
  6. Step 6: Final answer
    x = 1,639,434.78

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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.