Home / 1,215,659.43-1,677,615.15-664,386.39

Finding the Fourth Proportional to 1,215,659.43, 1,677,615.15 and 664,386.39

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Solution

The fourth proportional to 1,215,659.43, 1,677,615.15 and 664,386.39 is: 916,856.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,215,659.43 : 1,677,615.15 = 664,386.39 : x
  2. Step 2: Convert to fraction form
    1,215,659.43/1,677,615.15 = 664,386.39/x
  3. Step 3: Cross multiply
    1,215,659.43x = 1,677,615.15 × 664,386.39
  4. Step 4: Simplify right side
    1,215,659.43x = 1,114,584,673,317.81
  5. Step 5: Solve for x
    x = 1,114,584,673,317.81/1,215,659.43
  6. Step 6: Final answer
    x = 916,856.03

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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.