Home / 1,428,475.57-1,971,353.15-783,918.83

Finding the Fourth Proportional to 1,428,475.57, 1,971,353.15 and 783,918.83

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Solution

The fourth proportional to 1,428,475.57, 1,971,353.15 and 783,918.83 is: 1,081,839.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,428,475.57 : 1,971,353.15 = 783,918.83 : x
  2. Step 2: Convert to fraction form
    1,428,475.57/1,971,353.15 = 783,918.83/x
  3. Step 3: Cross multiply
    1,428,475.57x = 1,971,353.15 × 783,918.83
  4. Step 4: Simplify right side
    1,428,475.57x = 1,545,380,855,873.60
  5. Step 5: Solve for x
    x = 1,545,380,855,873.60/1,428,475.57
  6. Step 6: Final answer
    x = 1,081,839.19

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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.