Home / 1,211,886.36-1,672,402.75-668,031.23

Finding the Fourth Proportional to 1,211,886.36, 1,672,402.75 and 668,031.23

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Solution

The fourth proportional to 1,211,886.36, 1,672,402.75 and 668,031.23 is: 921,882.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,211,886.36 : 1,672,402.75 = 668,031.23 : x
  2. Step 2: Convert to fraction form
    1,211,886.36/1,672,402.75 = 668,031.23/x
  3. Step 3: Cross multiply
    1,211,886.36x = 1,672,402.75 × 668,031.23
  4. Step 4: Simplify right side
    1,211,886.36x = 1,117,217,268,648.81
  5. Step 5: Solve for x
    x = 1,117,217,268,648.81/1,211,886.36
  6. Step 6: Final answer
    x = 921,882.86

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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.