Home / 419,904,420.60-629,856,630.90-213,280,159.80

Finding the Fourth Proportional to 419,904,420.60, 629,856,630.90 and 213,280,159.80

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Solution

The fourth proportional to 419,904,420.60, 629,856,630.90 and 213,280,159.80 is: 319,920,239.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,904,420.60 : 629,856,630.90 = 213,280,159.80 : x
  2. Step 2: Convert to fraction form
    419,904,420.60/629,856,630.90 = 213,280,159.80/x
  3. Step 3: Cross multiply
    419,904,420.60x = 629,856,630.90 × 213,280,159.80
  4. Step 4: Simplify right side
    419,904,420.60x = 134,335,922,889,441,616
  5. Step 5: Solve for x
    x = 134,335,922,889,441,616/419,904,420.60
  6. Step 6: Final answer
    x = 319,920,239.70

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1.5x scale

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.