Home / 1,211,975.51-1,672,531.45-668,099.59

Finding the Fourth Proportional to 1,211,975.51, 1,672,531.45 and 668,099.59

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Solution

The fourth proportional to 1,211,975.51, 1,672,531.45 and 668,099.59 is: 921,980.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,211,975.51 : 1,672,531.45 = 668,099.59 : x
  2. Step 2: Convert to fraction form
    1,211,975.51/1,672,531.45 = 668,099.59/x
  3. Step 3: Cross multiply
    1,211,975.51x = 1,672,531.45 × 668,099.59
  4. Step 4: Simplify right side
    1,211,975.51x = 1,117,417,576,007.11
  5. Step 5: Solve for x
    x = 1,117,417,576,007.11/1,211,975.51
  6. Step 6: Final answer
    x = 921,980.33

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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.