Home / 1,238,708.88-1,709,329.76-687,454.16

Finding the Fourth Proportional to 1,238,708.88, 1,709,329.76 and 687,454.16

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Solution

The fourth proportional to 1,238,708.88, 1,709,329.76 and 687,454.16 is: 948,637.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,238,708.88 : 1,709,329.76 = 687,454.16 : x
  2. Step 2: Convert to fraction form
    1,238,708.88/1,709,329.76 = 687,454.16/x
  3. Step 3: Cross multiply
    1,238,708.88x = 1,709,329.76 × 687,454.16
  4. Step 4: Simplify right side
    1,238,708.88x = 1,175,085,854,323.80
  5. Step 5: Solve for x
    x = 1,175,085,854,323.80/1,238,708.88
  6. Step 6: Final answer
    x = 948,637.63

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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.