Home / 513,215,999.80-769,823,999.70-476,936,294.20

Finding the Fourth Proportional to 513,215,999.80, 769,823,999.70 and 476,936,294.20

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Solution

The fourth proportional to 513,215,999.80, 769,823,999.70 and 476,936,294.20 is: 715,404,441.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    513,215,999.80 : 769,823,999.70 = 476,936,294.20 : x
  2. Step 2: Convert to fraction form
    513,215,999.80/769,823,999.70 = 476,936,294.20/x
  3. Step 3: Cross multiply
    513,215,999.80x = 769,823,999.70 × 476,936,294.20
  4. Step 4: Simplify right side
    513,215,999.80x = 367,157,005,603,139,904
  5. Step 5: Solve for x
    x = 367,157,005,603,139,904/513,215,999.80
  6. Step 6: Final answer
    x = 715,404,441.30

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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.