Home / 1,245,946,498.20-1,868,919,747.30-518,840,731.80

Finding the Fourth Proportional to 1,245,946,498.20, 1,868,919,747.30 and 518,840,731.80

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Solution

The fourth proportional to 1,245,946,498.20, 1,868,919,747.30 and 518,840,731.80 is: 778,261,097.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,245,946,498.20 : 1,868,919,747.30 = 518,840,731.80 : x
  2. Step 2: Convert to fraction form
    1,245,946,498.20/1,868,919,747.30 = 518,840,731.80/x
  3. Step 3: Cross multiply
    1,245,946,498.20x = 1,868,919,747.30 × 518,840,731.80
  4. Step 4: Simplify right side
    1,245,946,498.20x = 969,671,689,364,603,008
  5. Step 5: Solve for x
    x = 969,671,689,364,603,008/1,245,946,498.20
  6. Step 6: Final answer
    x = 778,261,097.70

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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.