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Finding the Fourth Proportional to 393,661,089.60, 590,491,634.40 and 370,986,273.60

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Solution

The fourth proportional to 393,661,089.60, 590,491,634.40 and 370,986,273.60 is: 556,479,410.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,661,089.60 : 590,491,634.40 = 370,986,273.60 : x
  2. Step 2: Convert to fraction form
    393,661,089.60/590,491,634.40 = 370,986,273.60/x
  3. Step 3: Cross multiply
    393,661,089.60x = 590,491,634.40 × 370,986,273.60
  4. Step 4: Simplify right side
    393,661,089.60x = 219,064,291,038,029,568
  5. Step 5: Solve for x
    x = 219,064,291,038,029,568/393,661,089.60
  6. Step 6: Final answer
    x = 556,479,410.40

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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.