Home / 1,291,619.12-1,936,463.56-891,117.05

Finding the Fourth Proportional to 1,291,619.12, 1,936,463.56 and 891,117.05

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Solution

The fourth proportional to 1,291,619.12, 1,936,463.56 and 891,117.05 is: 1,336,009.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,291,619.12 : 1,936,463.56 = 891,117.05 : x
  2. Step 2: Convert to fraction form
    1,291,619.12/1,936,463.56 = 891,117.05/x
  3. Step 3: Cross multiply
    1,291,619.12x = 1,936,463.56 × 891,117.05
  4. Step 4: Simplify right side
    1,291,619.12x = 1,725,615,683,109.59
  5. Step 5: Solve for x
    x = 1,725,615,683,109.59/1,291,619.12
  6. Step 6: Final answer
    x = 1,336,009.71

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.