Home / 839,808,729.20-1,259,713,093.80-426,560,207.60

Finding the Fourth Proportional to 839,808,729.20, 1,259,713,093.80 and 426,560,207.60

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Solution

The fourth proportional to 839,808,729.20, 1,259,713,093.80 and 426,560,207.60 is: 639,840,311.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    839,808,729.20 : 1,259,713,093.80 = 426,560,207.60 : x
  2. Step 2: Convert to fraction form
    839,808,729.20/1,259,713,093.80 = 426,560,207.60/x
  3. Step 3: Cross multiply
    839,808,729.20x = 1,259,713,093.80 × 426,560,207.60
  4. Step 4: Simplify right side
    839,808,729.20x = 537,343,478,807,766,272
  5. Step 5: Solve for x
    x = 537,343,478,807,766,272/839,808,729.20
  6. Step 6: Final answer
    x = 639,840,311.40

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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.