Home / 420,616,637.50-630,360,981.72-327,356,215.48

Finding the Fourth Proportional to 420,616,637.50, 630,360,981.72 and 327,356,215.48

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Solution

The fourth proportional to 420,616,637.50, 630,360,981.72 and 327,356,215.48 is: 490,595,394.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,616,637.50 : 630,360,981.72 = 327,356,215.48 : x
  2. Step 2: Convert to fraction form
    420,616,637.50/630,360,981.72 = 327,356,215.48/x
  3. Step 3: Cross multiply
    420,616,637.50x = 630,360,981.72 × 327,356,215.48
  4. Step 4: Simplify right side
    420,616,637.50x = 206,352,585,362,116,672
  5. Step 5: Solve for x
    x = 206,352,585,362,116,672/420,616,637.50
  6. Step 6: Final answer
    x = 490,595,394.87

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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.