Home / 392,128,009.60-588,214,132.80-119,507,670.40

Finding the Fourth Proportional to 392,128,009.60, 588,214,132.80 and 119,507,670.40

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Solution

The fourth proportional to 392,128,009.60, 588,214,132.80 and 119,507,670.40 is: 179,268,246.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,128,009.60 : 588,214,132.80 = 119,507,670.40 : x
  2. Step 2: Convert to fraction form
    392,128,009.60/588,214,132.80 = 119,507,670.40/x
  3. Step 3: Cross multiply
    392,128,009.60x = 588,214,132.80 × 119,507,670.40
  4. Step 4: Simplify right side
    392,128,009.60x = 70,296,100,707,284,224
  5. Step 5: Solve for x
    x = 70,296,100,707,284,224/392,128,009.60
  6. Step 6: Final answer
    x = 179,268,246.56

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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.