Home / 1,211,881.64-1,672,471.49-668,016.18

Finding the Fourth Proportional to 1,211,881.64, 1,672,471.49 and 668,016.18

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Solution

The fourth proportional to 1,211,881.64, 1,672,471.49 and 668,016.18 is: 921,903.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,211,881.64 : 1,672,471.49 = 668,016.18 : x
  2. Step 2: Convert to fraction form
    1,211,881.64/1,672,471.49 = 668,016.18/x
  3. Step 3: Cross multiply
    1,211,881.64x = 1,672,471.49 × 668,016.18
  4. Step 4: Simplify right side
    1,211,881.64x = 1,117,238,012,568.63
  5. Step 5: Solve for x
    x = 1,117,238,012,568.63/1,211,881.64
  6. Step 6: Final answer
    x = 921,903.58

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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.