Home / 645,790,193.28-968,839,247.70-209,091,008.93

Finding the Fourth Proportional to 645,790,193.28, 968,839,247.70 and 209,091,008.93

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Solution

The fourth proportional to 645,790,193.28, 968,839,247.70 and 209,091,008.93 is: 313,686,361.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,790,193.28 : 968,839,247.70 = 209,091,008.93 : x
  2. Step 2: Convert to fraction form
    645,790,193.28/968,839,247.70 = 209,091,008.93/x
  3. Step 3: Cross multiply
    645,790,193.28x = 968,839,247.70 × 209,091,008.93
  4. Step 4: Simplify right side
    645,790,193.28x = 202,575,575,787,731,008
  5. Step 5: Solve for x
    x = 202,575,575,787,731,008/645,790,193.28
  6. Step 6: Final answer
    x = 313,686,361.14

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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.