Home / 1,330,491.31-1,988,447.52-971,419.21

Finding the Fourth Proportional to 1,330,491.31, 1,988,447.52 and 971,419.21

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Solution

The fourth proportional to 1,330,491.31, 1,988,447.52 and 971,419.21 is: 1,451,806.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,330,491.31 : 1,988,447.52 = 971,419.21 : x
  2. Step 2: Convert to fraction form
    1,330,491.31/1,988,447.52 = 971,419.21/x
  3. Step 3: Cross multiply
    1,330,491.31x = 1,988,447.52 × 971,419.21
  4. Step 4: Simplify right side
    1,330,491.31x = 1,931,616,115,008.58
  5. Step 5: Solve for x
    x = 1,931,616,115,008.58/1,330,491.31
  6. Step 6: Final answer
    x = 1,451,806.64

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.