Home / 420,615,143.36-630,358,751.42-327,354,726.35

Finding the Fourth Proportional to 420,615,143.36, 630,358,751.42 and 327,354,726.35

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Solution

The fourth proportional to 420,615,143.36, 630,358,751.42 and 327,354,726.35 is: 490,593,170.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,615,143.36 : 630,358,751.42 = 327,354,726.35 : x
  2. Step 2: Convert to fraction form
    420,615,143.36/630,358,751.42 = 327,354,726.35/x
  3. Step 3: Cross multiply
    420,615,143.36x = 630,358,751.42 × 327,354,726.35
  4. Step 4: Simplify right side
    420,615,143.36x = 206,350,916,568,633,216
  5. Step 5: Solve for x
    x = 206,350,916,568,633,216/420,615,143.36
  6. Step 6: Final answer
    x = 490,593,170.10

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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.