Home / 1,326,291,238.60-1,989,436,857.90-1,245,603,315.40

Finding the Fourth Proportional to 1,326,291,238.60, 1,989,436,857.90 and 1,245,603,315.40

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Solution

The fourth proportional to 1,326,291,238.60, 1,989,436,857.90 and 1,245,603,315.40 is: 1,868,404,973.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,326,291,238.60 : 1,989,436,857.90 = 1,245,603,315.40 : x
  2. Step 2: Convert to fraction form
    1,326,291,238.60/1,989,436,857.90 = 1,245,603,315.40/x
  3. Step 3: Cross multiply
    1,326,291,238.60x = 1,989,436,857.90 × 1,245,603,315.40
  4. Step 4: Simplify right side
    1,326,291,238.60x = 2,478,049,145,979,198,976
  5. Step 5: Solve for x
    x = 2,478,049,145,979,198,976/1,326,291,238.60
  6. Step 6: Final answer
    x = 1,868,404,973.10

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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.