Home / 640,964,009.60-961,446,014.40-231,872,537.60

Finding the Fourth Proportional to 640,964,009.60, 961,446,014.40 and 231,872,537.60

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Solution

The fourth proportional to 640,964,009.60, 961,446,014.40 and 231,872,537.60 is: 347,808,806.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,964,009.60 : 961,446,014.40 = 231,872,537.60 : x
  2. Step 2: Convert to fraction form
    640,964,009.60/961,446,014.40 = 231,872,537.60/x
  3. Step 3: Cross multiply
    640,964,009.60x = 961,446,014.40 × 231,872,537.60
  4. Step 4: Simplify right side
    640,964,009.60x = 222,932,927,124,334,144
  5. Step 5: Solve for x
    x = 222,932,927,124,334,144/640,964,009.60
  6. Step 6: Final answer
    x = 347,808,806.40

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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.