Home / 669,659,319.20-1,003,946,913.68-209,360,554.40

Finding the Fourth Proportional to 669,659,319.20, 1,003,946,913.68 and 209,360,554.40

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Solution

The fourth proportional to 669,659,319.20, 1,003,946,913.68 and 209,360,554.40 is: 313,871,361.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    669,659,319.20 : 1,003,946,913.68 = 209,360,554.40 : x
  2. Step 2: Convert to fraction form
    669,659,319.20/1,003,946,913.68 = 209,360,554.40/x
  3. Step 3: Cross multiply
    669,659,319.20x = 1,003,946,913.68 × 209,360,554.40
  4. Step 4: Simplify right side
    669,659,319.20x = 210,186,882,436,213,728
  5. Step 5: Solve for x
    x = 210,186,882,436,213,728/669,659,319.20
  6. Step 6: Final answer
    x = 313,871,361.77

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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.