Home / 645,790,189.59-968,839,242.17-209,091,005.24

Finding the Fourth Proportional to 645,790,189.59, 968,839,242.17 and 209,091,005.24

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Solution

The fourth proportional to 645,790,189.59, 968,839,242.17 and 209,091,005.24 is: 313,686,355.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,790,189.59 : 968,839,242.17 = 209,091,005.24 : x
  2. Step 2: Convert to fraction form
    645,790,189.59/968,839,242.17 = 209,091,005.24/x
  3. Step 3: Cross multiply
    645,790,189.59x = 968,839,242.17 × 209,091,005.24
  4. Step 4: Simplify right side
    645,790,189.59x = 202,575,571,055,395,456
  5. Step 5: Solve for x
    x = 202,575,571,055,395,456/645,790,189.59
  6. Step 6: Final answer
    x = 313,686,355.60

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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.