Home / 1,287,318,704.20-1,930,978,056.30-425,675,696.20

Finding the Fourth Proportional to 1,287,318,704.20, 1,930,978,056.30 and 425,675,696.20

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Solution

The fourth proportional to 1,287,318,704.20, 1,930,978,056.30 and 425,675,696.20 is: 638,513,544.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,287,318,704.20 : 1,930,978,056.30 = 425,675,696.20 : x
  2. Step 2: Convert to fraction form
    1,287,318,704.20/1,930,978,056.30 = 425,675,696.20/x
  3. Step 3: Cross multiply
    1,287,318,704.20x = 1,930,978,056.30 × 425,675,696.20
  4. Step 4: Simplify right side
    1,287,318,704.20x = 821,970,428,462,425,216
  5. Step 5: Solve for x
    x = 821,970,428,462,425,216/1,287,318,704.20
  6. Step 6: Final answer
    x = 638,513,544.30

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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.