Home / 419,904,401.80-629,856,602.70-315,600,248.20

Finding the Fourth Proportional to 419,904,401.80, 629,856,602.70 and 315,600,248.20

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Solution

The fourth proportional to 419,904,401.80, 629,856,602.70 and 315,600,248.20 is: 473,400,372.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,904,401.80 : 629,856,602.70 = 315,600,248.20 : x
  2. Step 2: Convert to fraction form
    419,904,401.80/629,856,602.70 = 315,600,248.20/x
  3. Step 3: Cross multiply
    419,904,401.80x = 629,856,602.70 × 315,600,248.20
  4. Step 4: Simplify right side
    419,904,401.80x = 198,782,900,142,528,800
  5. Step 5: Solve for x
    x = 198,782,900,142,528,800/419,904,401.80
  6. Step 6: Final answer
    x = 473,400,372.30

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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.