Home / 420,616,630.47-630,360,971.25-327,356,208.45

Finding the Fourth Proportional to 420,616,630.47, 630,360,971.25 and 327,356,208.45

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Solution

The fourth proportional to 420,616,630.47, 630,360,971.25 and 327,356,208.45 is: 490,595,384.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,616,630.47 : 630,360,971.25 = 327,356,208.45 : x
  2. Step 2: Convert to fraction form
    420,616,630.47/630,360,971.25 = 327,356,208.45/x
  3. Step 3: Cross multiply
    420,616,630.47x = 630,360,971.25 × 327,356,208.45
  4. Step 4: Simplify right side
    420,616,630.47x = 206,352,577,503,259,456
  5. Step 5: Solve for x
    x = 206,352,577,503,259,456/420,616,630.47
  6. Step 6: Final answer
    x = 490,595,384.38

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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.