Home / 644,308,037.96-889,120,063.00-393,831,812.32

Finding the Fourth Proportional to 644,308,037.96, 889,120,063.00 and 393,831,812.32

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Solution

The fourth proportional to 644,308,037.96, 889,120,063.00 and 393,831,812.32 is: 543,472,601.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,308,037.96 : 889,120,063.00 = 393,831,812.32 : x
  2. Step 2: Convert to fraction form
    644,308,037.96/889,120,063.00 = 393,831,812.32/x
  3. Step 3: Cross multiply
    644,308,037.96x = 889,120,063.00 × 393,831,812.32
  4. Step 4: Simplify right side
    644,308,037.96x = 350,163,765,784,637,824
  5. Step 5: Solve for x
    x = 350,163,765,784,637,824/644,308,037.96
  6. Step 6: Final answer
    x = 543,472,601.86

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.