Home / 419,904,515.60-629,856,773.40-258,437,430.80

Finding the Fourth Proportional to 419,904,515.60, 629,856,773.40 and 258,437,430.80

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Solution

The fourth proportional to 419,904,515.60, 629,856,773.40 and 258,437,430.80 is: 387,656,146.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,904,515.60 : 629,856,773.40 = 258,437,430.80 : x
  2. Step 2: Convert to fraction form
    419,904,515.60/629,856,773.40 = 258,437,430.80/x
  3. Step 3: Cross multiply
    419,904,515.60x = 629,856,773.40 × 258,437,430.80
  4. Step 4: Simplify right side
    419,904,515.60x = 162,778,566,289,473,792
  5. Step 5: Solve for x
    x = 162,778,566,289,473,792/419,904,515.60
  6. Step 6: Final answer
    x = 387,656,146.20

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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.