Home / 839,809,003.80-1,259,713,505.70-409,827,307.80

Finding the Fourth Proportional to 839,809,003.80, 1,259,713,505.70 and 409,827,307.80

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Solution

The fourth proportional to 839,809,003.80, 1,259,713,505.70 and 409,827,307.80 is: 614,740,961.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    839,809,003.80 : 1,259,713,505.70 = 409,827,307.80 : x
  2. Step 2: Convert to fraction form
    839,809,003.80/1,259,713,505.70 = 409,827,307.80/x
  3. Step 3: Cross multiply
    839,809,003.80x = 1,259,713,505.70 × 409,827,307.80
  4. Step 4: Simplify right side
    839,809,003.80x = 516,264,994,640,331,008
  5. Step 5: Solve for x
    x = 516,264,994,640,331,008/839,809,003.80
  6. Step 6: Final answer
    x = 614,740,961.70

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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.