Home / 815,174.03-1,123,089.68-630,778.60

Finding the Fourth Proportional to 815,174.03, 1,123,089.68 and 630,778.60

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Solution

The fourth proportional to 815,174.03, 1,123,089.68 and 630,778.60 is: 869,042.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,174.03 : 1,123,089.68 = 630,778.60 : x
  2. Step 2: Convert to fraction form
    815,174.03/1,123,089.68 = 630,778.60/x
  3. Step 3: Cross multiply
    815,174.03x = 1,123,089.68 × 630,778.60
  4. Step 4: Simplify right side
    815,174.03x = 708,420,934,794.07
  5. Step 5: Solve for x
    x = 708,420,934,794.07/815,174.03
  6. Step 6: Final answer
    x = 869,042.58

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Double scale
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1.5x scale

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.