Home / 612,221,008,050.70-918,331,512,076.05-412,392,389,605.90

Finding the Fourth Proportional to 612,221,008,050.70, 918,331,512,076.05 and 412,392,389,605.90

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Solution

The fourth proportional to 612,221,008,050.70, 918,331,512,076.05 and 412,392,389,605.90 is: 618,588,584,408.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,221,008,050.70 : 918,331,512,076.05 = 412,392,389,605.90 : x
  2. Step 2: Convert to fraction form
    612,221,008,050.70/918,331,512,076.05 = 412,392,389,605.90/x
  3. Step 3: Cross multiply
    612,221,008,050.70x = 918,331,512,076.05 × 412,392,389,605.90
  4. Step 4: Simplify right side
    612,221,008,050.70x = 378,712,926,715,441,687,035,904
  5. Step 5: Solve for x
    x = 378,712,926,715,441,687,035,904/612,221,008,050.70
  6. Step 6: Final answer
    x = 618,588,584,408.85

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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.