Home / 409,267,042.20-613,905,812.10-136,637,809.20

Finding the Fourth Proportional to 409,267,042.20, 613,905,812.10 and 136,637,809.20

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Solution

The fourth proportional to 409,267,042.20, 613,905,812.10 and 136,637,809.20 is: 204,958,466.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    409,267,042.20 : 613,905,812.10 = 136,637,809.20 : x
  2. Step 2: Convert to fraction form
    409,267,042.20/613,905,812.10 = 136,637,809.20/x
  3. Step 3: Cross multiply
    409,267,042.20x = 613,905,812.10 × 136,637,809.20
  4. Step 4: Simplify right side
    409,267,042.20x = 83,882,745,220,490,848
  5. Step 5: Solve for x
    x = 83,882,745,220,490,848/409,267,042.20
  6. Step 6: Final answer
    x = 204,958,466.16

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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.