Home / 839,808,019.80-1,259,712,029.70-431,661,331.80

Finding the Fourth Proportional to 839,808,019.80, 1,259,712,029.70 and 431,661,331.80

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Solution

The fourth proportional to 839,808,019.80, 1,259,712,029.70 and 431,661,331.80 is: 647,491,997.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    839,808,019.80 : 1,259,712,029.70 = 431,661,331.80 : x
  2. Step 2: Convert to fraction form
    839,808,019.80/1,259,712,029.70 = 431,661,331.80/x
  3. Step 3: Cross multiply
    839,808,019.80x = 1,259,712,029.70 × 431,661,331.80
  4. Step 4: Simplify right side
    839,808,019.80x = 543,768,972,424,783,168
  5. Step 5: Solve for x
    x = 543,768,972,424,783,168/839,808,019.80
  6. Step 6: Final answer
    x = 647,491,997.70

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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.