Home / 1,428,476.13-1,971,353.93-783,919.40

Finding the Fourth Proportional to 1,428,476.13, 1,971,353.93 and 783,919.40

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Solution

The fourth proportional to 1,428,476.13, 1,971,353.93 and 783,919.40 is: 1,081,839.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,428,476.13 : 1,971,353.93 = 783,919.40 : x
  2. Step 2: Convert to fraction form
    1,428,476.13/1,971,353.93 = 783,919.40/x
  3. Step 3: Cross multiply
    1,428,476.13x = 1,971,353.93 × 783,919.40
  4. Step 4: Simplify right side
    1,428,476.13x = 1,545,382,576,216.88
  5. Step 5: Solve for x
    x = 1,545,382,576,216.88/1,428,476.13
  6. Step 6: Final answer
    x = 1,081,839.97

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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.