Home / 1,277,540.31-1,916,710.10-378,986.76

Finding the Fourth Proportional to 1,277,540.31, 1,916,710.10 and 378,986.76

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Solution

The fourth proportional to 1,277,540.31, 1,916,710.10 and 378,986.76 is: 568,598.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,277,540.31 : 1,916,710.10 = 378,986.76 : x
  2. Step 2: Convert to fraction form
    1,277,540.31/1,916,710.10 = 378,986.76/x
  3. Step 3: Cross multiply
    1,277,540.31x = 1,916,710.10 × 378,986.76
  4. Step 4: Simplify right side
    1,277,540.31x = 726,407,748,763.34
  5. Step 5: Solve for x
    x = 726,407,748,763.34/1,277,540.31
  6. Step 6: Final answer
    x = 568,598.69

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.