Home / 1,428,449.43-1,971,254.40-783,880.38

Finding the Fourth Proportional to 1,428,449.43, 1,971,254.40 and 783,880.38

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Solution

The fourth proportional to 1,428,449.43, 1,971,254.40 and 783,880.38 is: 1,081,751.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,428,449.43 : 1,971,254.40 = 783,880.38 : x
  2. Step 2: Convert to fraction form
    1,428,449.43/1,971,254.40 = 783,880.38/x
  3. Step 3: Cross multiply
    1,428,449.43x = 1,971,254.40 × 783,880.38
  4. Step 4: Simplify right side
    1,428,449.43x = 1,545,227,648,148.67
  5. Step 5: Solve for x
    x = 1,545,227,648,148.67/1,428,449.43
  6. Step 6: Final answer
    x = 1,081,751.73

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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.