Home / 1,289,018.70-1,933,626.45-390,534.85

Finding the Fourth Proportional to 1,289,018.70, 1,933,626.45 and 390,534.85

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Solution

The fourth proportional to 1,289,018.70, 1,933,626.45 and 390,534.85 is: 585,832.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,289,018.70 : 1,933,626.45 = 390,534.85 : x
  2. Step 2: Convert to fraction form
    1,289,018.70/1,933,626.45 = 390,534.85/x
  3. Step 3: Cross multiply
    1,289,018.70x = 1,933,626.45 × 390,534.85
  4. Step 4: Simplify right side
    1,289,018.70x = 755,148,515,606.78
  5. Step 5: Solve for x
    x = 755,148,515,606.78/1,289,018.70
  6. Step 6: Final answer
    x = 585,832.09

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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.