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Finding the Fourth Proportional to 419,907,602.40, 629,861,403.60 and 256,648,927.20

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Solution

The fourth proportional to 419,907,602.40, 629,861,403.60 and 256,648,927.20 is: 384,973,390.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,907,602.40 : 629,861,403.60 = 256,648,927.20 : x
  2. Step 2: Convert to fraction form
    419,907,602.40/629,861,403.60 = 256,648,927.20/x
  3. Step 3: Cross multiply
    419,907,602.40x = 629,861,403.60 × 256,648,927.20
  4. Step 4: Simplify right side
    419,907,602.40x = 161,653,253,518,626,208
  5. Step 5: Solve for x
    x = 161,653,253,518,626,208/419,907,602.40
  6. Step 6: Final answer
    x = 384,973,390.80

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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.