Home / 393,890,867.28-590,308,129.47-306,557,833.68

Finding the Fourth Proportional to 393,890,867.28, 590,308,129.47 and 306,557,833.68

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Solution

The fourth proportional to 393,890,867.28, 590,308,129.47 and 306,557,833.68 is: 459,425,684.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,890,867.28 : 590,308,129.47 = 306,557,833.68 : x
  2. Step 2: Convert to fraction form
    393,890,867.28/590,308,129.47 = 306,557,833.68/x
  3. Step 3: Cross multiply
    393,890,867.28x = 590,308,129.47 × 306,557,833.68
  4. Step 4: Simplify right side
    393,890,867.28x = 180,963,581,374,016,192
  5. Step 5: Solve for x
    x = 180,963,581,374,016,192/393,890,867.28
  6. Step 6: Final answer
    x = 459,425,684.64

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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.