Home / 839,808,733.20-1,259,713,099.80-426,560,211.60

Finding the Fourth Proportional to 839,808,733.20, 1,259,713,099.80 and 426,560,211.60

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Solution

The fourth proportional to 839,808,733.20, 1,259,713,099.80 and 426,560,211.60 is: 639,840,317.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    839,808,733.20 : 1,259,713,099.80 = 426,560,211.60 : x
  2. Step 2: Convert to fraction form
    839,808,733.20/1,259,713,099.80 = 426,560,211.60/x
  3. Step 3: Cross multiply
    839,808,733.20x = 1,259,713,099.80 × 426,560,211.60
  4. Step 4: Simplify right side
    839,808,733.20x = 537,343,486,405,979,904
  5. Step 5: Solve for x
    x = 537,343,486,405,979,904/839,808,733.20
  6. Step 6: Final answer
    x = 639,840,317.40

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1.5x scale

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.