Home / 1,129,865.76-1,558,835.24-639,768.52

Finding the Fourth Proportional to 1,129,865.76, 1,558,835.24 and 639,768.52

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Solution

The fourth proportional to 1,129,865.76, 1,558,835.24 and 639,768.52 is: 882,665.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,129,865.76 : 1,558,835.24 = 639,768.52 : x
  2. Step 2: Convert to fraction form
    1,129,865.76/1,558,835.24 = 639,768.52/x
  3. Step 3: Cross multiply
    1,129,865.76x = 1,558,835.24 × 639,768.52
  4. Step 4: Simplify right side
    1,129,865.76x = 997,293,714,418.65
  5. Step 5: Solve for x
    x = 997,293,714,418.65/1,129,865.76
  6. Step 6: Final answer
    x = 882,665.67

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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.