Home / 915,524.75-1,263,439.34-507,643.78

Finding the Fourth Proportional to 915,524.75, 1,263,439.34 and 507,643.78

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Solution

The fourth proportional to 915,524.75, 1,263,439.34 and 507,643.78 is: 700,556.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    915,524.75 : 1,263,439.34 = 507,643.78 : x
  2. Step 2: Convert to fraction form
    915,524.75/1,263,439.34 = 507,643.78/x
  3. Step 3: Cross multiply
    915,524.75x = 1,263,439.34 × 507,643.78
  4. Step 4: Simplify right side
    915,524.75x = 641,377,122,358.31
  5. Step 5: Solve for x
    x = 641,377,122,358.31/915,524.75
  6. Step 6: Final answer
    x = 700,556.84

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Double scale
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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.