Home / 1,326,629,999.80-1,989,944,999.70-938,890,646.20

Finding the Fourth Proportional to 1,326,629,999.80, 1,989,944,999.70 and 938,890,646.20

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Solution

The fourth proportional to 1,326,629,999.80, 1,989,944,999.70 and 938,890,646.20 is: 1,408,335,969.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,326,629,999.80 : 1,989,944,999.70 = 938,890,646.20 : x
  2. Step 2: Convert to fraction form
    1,326,629,999.80/1,989,944,999.70 = 938,890,646.20/x
  3. Step 3: Cross multiply
    1,326,629,999.80x = 1,989,944,999.70 × 938,890,646.20
  4. Step 4: Simplify right side
    1,326,629,999.80x = 1,868,340,746,670,791,936
  5. Step 5: Solve for x
    x = 1,868,340,746,670,791,936/1,326,629,999.80
  6. Step 6: Final answer
    x = 1,408,335,969.30

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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.