Home / 839,811,892.80-1,259,717,839.20-409,830,196.80

Finding the Fourth Proportional to 839,811,892.80, 1,259,717,839.20 and 409,830,196.80

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Solution

The fourth proportional to 839,811,892.80, 1,259,717,839.20 and 409,830,196.80 is: 614,745,295.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    839,811,892.80 : 1,259,717,839.20 = 409,830,196.80 : x
  2. Step 2: Convert to fraction form
    839,811,892.80/1,259,717,839.20 = 409,830,196.80/x
  3. Step 3: Cross multiply
    839,811,892.80x = 1,259,717,839.20 × 409,830,196.80
  4. Step 4: Simplify right side
    839,811,892.80x = 516,270,409,951,806,784
  5. Step 5: Solve for x
    x = 516,270,409,951,806,784/839,811,892.80
  6. Step 6: Final answer
    x = 614,745,295.20

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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.