Home / 1,681,619.60-2,320,641.48-917,690

Finding the Fourth Proportional to 1,681,619.60, 2,320,641.48 and 917,690

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Solution

The fourth proportional to 1,681,619.60, 2,320,641.48 and 917,690 is: 1,266,415.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,681,619.60 : 2,320,641.48 = 917,690 : x
  2. Step 2: Convert to fraction form
    1,681,619.60/2,320,641.48 = 917,690/x
  3. Step 3: Cross multiply
    1,681,619.60x = 2,320,641.48 × 917,690
  4. Step 4: Simplify right side
    1,681,619.60x = 2,129,629,479,781.20
  5. Step 5: Solve for x
    x = 2,129,629,479,781.20/1,681,619.60
  6. Step 6: Final answer
    x = 1,266,415.71

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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.