Home / 1,389,704,087.20-2,084,556,130.80-469,567,139.80

Finding the Fourth Proportional to 1,389,704,087.20, 2,084,556,130.80 and 469,567,139.80

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Solution

The fourth proportional to 1,389,704,087.20, 2,084,556,130.80 and 469,567,139.80 is: 704,350,709.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,389,704,087.20 : 2,084,556,130.80 = 469,567,139.80 : x
  2. Step 2: Convert to fraction form
    1,389,704,087.20/2,084,556,130.80 = 469,567,139.80/x
  3. Step 3: Cross multiply
    1,389,704,087.20x = 2,084,556,130.80 × 469,567,139.80
  4. Step 4: Simplify right side
    1,389,704,087.20x = 978,839,060,092,310,656
  5. Step 5: Solve for x
    x = 978,839,060,092,310,656/1,389,704,087.20
  6. Step 6: Final answer
    x = 704,350,709.70

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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.