Home / 507,530,668.78-700,392,322.92-287,514,094.78

Finding the Fourth Proportional to 507,530,668.78, 700,392,322.92 and 287,514,094.78

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Solution

The fourth proportional to 507,530,668.78, 700,392,322.92 and 287,514,094.78 is: 396,769,450.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    507,530,668.78 : 700,392,322.92 = 287,514,094.78 : x
  2. Step 2: Convert to fraction form
    507,530,668.78/700,392,322.92 = 287,514,094.78/x
  3. Step 3: Cross multiply
    507,530,668.78x = 700,392,322.92 × 287,514,094.78
  4. Step 4: Simplify right side
    507,530,668.78x = 201,372,664,716,080,736
  5. Step 5: Solve for x
    x = 201,372,664,716,080,736/507,530,668.78
  6. Step 6: Final answer
    x = 396,769,450.80

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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.