Home / 1,938,965,657.70-2,909,293,625.45-679,333,423.10

Finding the Fourth Proportional to 1,938,965,657.70, 2,909,293,625.45 and 679,333,423.10

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Solution

The fourth proportional to 1,938,965,657.70, 2,909,293,625.45 and 679,333,423.10 is: 1,019,296,236.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,938,965,657.70 : 2,909,293,625.45 = 679,333,423.10 : x
  2. Step 2: Convert to fraction form
    1,938,965,657.70/2,909,293,625.45 = 679,333,423.10/x
  3. Step 3: Cross multiply
    1,938,965,657.70x = 2,909,293,625.45 × 679,333,423.10
  4. Step 4: Simplify right side
    1,938,965,657.70x = 1,976,380,397,379,957,760
  5. Step 5: Solve for x
    x = 1,976,380,397,379,957,760/1,938,965,657.70
  6. Step 6: Final answer
    x = 1,019,296,236.39

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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.