Home / 393,984,278.60-590,976,417.90-388,609,507.40

Finding the Fourth Proportional to 393,984,278.60, 590,976,417.90 and 388,609,507.40

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Solution

The fourth proportional to 393,984,278.60, 590,976,417.90 and 388,609,507.40 is: 582,914,261.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,984,278.60 : 590,976,417.90 = 388,609,507.40 : x
  2. Step 2: Convert to fraction form
    393,984,278.60/590,976,417.90 = 388,609,507.40/x
  3. Step 3: Cross multiply
    393,984,278.60x = 590,976,417.90 × 388,609,507.40
  4. Step 4: Simplify right side
    393,984,278.60x = 229,659,054,645,135,520
  5. Step 5: Solve for x
    x = 229,659,054,645,135,520/393,984,278.60
  6. Step 6: Final answer
    x = 582,914,261.10

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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.