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Finding the Fourth Proportional to 665,573,365.60, 996,446,860.80 and 407,293,039.60

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Solution

The fourth proportional to 665,573,365.60, 996,446,860.80 and 407,293,039.60 is: 609,768,797.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,573,365.60 : 996,446,860.80 = 407,293,039.60 : x
  2. Step 2: Convert to fraction form
    665,573,365.60/996,446,860.80 = 407,293,039.60/x
  3. Step 3: Cross multiply
    665,573,365.60x = 996,446,860.80 × 407,293,039.60
  4. Step 4: Simplify right side
    665,573,365.60x = 405,845,870,735,110,080
  5. Step 5: Solve for x
    x = 405,845,870,735,110,080/665,573,365.60
  6. Step 6: Final answer
    x = 609,768,797.42

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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.