Home / 1,389,479.76-1,917,683.45-800,664.64

Finding the Fourth Proportional to 1,389,479.76, 1,917,683.45 and 800,664.64

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Solution

The fourth proportional to 1,389,479.76, 1,917,683.45 and 800,664.64 is: 1,105,033.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,389,479.76 : 1,917,683.45 = 800,664.64 : x
  2. Step 2: Convert to fraction form
    1,389,479.76/1,917,683.45 = 800,664.64/x
  3. Step 3: Cross multiply
    1,389,479.76x = 1,917,683.45 × 800,664.64
  4. Step 4: Simplify right side
    1,389,479.76x = 1,535,421,327,126.55
  5. Step 5: Solve for x
    x = 1,535,421,327,126.55/1,389,479.76
  6. Step 6: Final answer
    x = 1,105,033.24

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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.