Home / 639,725,401.80-959,588,112.78-155,051,209.80

Finding the Fourth Proportional to 639,725,401.80, 959,588,112.78 and 155,051,209.80

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Solution

The fourth proportional to 639,725,401.80, 959,588,112.78 and 155,051,209.80 is: 232,576,817.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,725,401.80 : 959,588,112.78 = 155,051,209.80 : x
  2. Step 2: Convert to fraction form
    639,725,401.80/959,588,112.78 = 155,051,209.80/x
  3. Step 3: Cross multiply
    639,725,401.80x = 959,588,112.78 × 155,051,209.80
  4. Step 4: Simplify right side
    639,725,401.80x = 148,785,297,796,237,856
  5. Step 5: Solve for x
    x = 148,785,297,796,237,856/639,725,401.80
  6. Step 6: Final answer
    x = 232,576,817.14

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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.