Home / 1,868,647,980.70-2,803,250,685.42-688,137,690.89

Finding the Fourth Proportional to 1,868,647,980.70, 2,803,250,685.42 and 688,137,690.89

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Solution

The fourth proportional to 1,868,647,980.70, 2,803,250,685.42 and 688,137,690.89 is: 1,032,309,174.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,868,647,980.70 : 2,803,250,685.42 = 688,137,690.89 : x
  2. Step 2: Convert to fraction form
    1,868,647,980.70/2,803,250,685.42 = 688,137,690.89/x
  3. Step 3: Cross multiply
    1,868,647,980.70x = 2,803,250,685.42 × 688,137,690.89
  4. Step 4: Simplify right side
    1,868,647,980.70x = 1,929,022,453,657,736,960
  5. Step 5: Solve for x
    x = 1,929,022,453,657,736,960/1,868,647,980.70
  6. Step 6: Final answer
    x = 1,032,309,174.11

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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.