Home / 640,758,706.21-961,175,057.46-247,287,574.45

Finding the Fourth Proportional to 640,758,706.21, 961,175,057.46 and 247,287,574.45

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Solution

The fourth proportional to 640,758,706.21, 961,175,057.46 and 247,287,574.45 is: 370,945,640.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,758,706.21 : 961,175,057.46 = 247,287,574.45 : x
  2. Step 2: Convert to fraction form
    640,758,706.21/961,175,057.46 = 247,287,574.45/x
  3. Step 3: Cross multiply
    640,758,706.21x = 961,175,057.46 × 247,287,574.45
  4. Step 4: Simplify right side
    640,758,706.21x = 237,686,648,581,122,784
  5. Step 5: Solve for x
    x = 237,686,648,581,122,784/640,758,706.21
  6. Step 6: Final answer
    x = 370,945,640.34

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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.