Home / 1,428,513.40-1,971,372.90-783,993.52

Finding the Fourth Proportional to 1,428,513.40, 1,971,372.90 and 783,993.52

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Solution

The fourth proportional to 1,428,513.40, 1,971,372.90 and 783,993.52 is: 1,081,924.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,428,513.40 : 1,971,372.90 = 783,993.52 : x
  2. Step 2: Convert to fraction form
    1,428,513.40/1,971,372.90 = 783,993.52/x
  3. Step 3: Cross multiply
    1,428,513.40x = 1,971,372.90 × 783,993.52
  4. Step 4: Simplify right side
    1,428,513.40x = 1,545,543,579,103.61
  5. Step 5: Solve for x
    x = 1,545,543,579,103.61/1,428,513.40
  6. Step 6: Final answer
    x = 1,081,924.45

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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.