Home / 1,242,243,028.40-1,861,782,029.40-660,256,084.40

Finding the Fourth Proportional to 1,242,243,028.40, 1,861,782,029.40 and 660,256,084.40

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Solution

The fourth proportional to 1,242,243,028.40, 1,861,782,029.40 and 660,256,084.40 is: 989,543,015.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,242,243,028.40 : 1,861,782,029.40 = 660,256,084.40 : x
  2. Step 2: Convert to fraction form
    1,242,243,028.40/1,861,782,029.40 = 660,256,084.40/x
  3. Step 3: Cross multiply
    1,242,243,028.40x = 1,861,782,029.40 × 660,256,084.40
  4. Step 4: Simplify right side
    1,242,243,028.40x = 1,229,252,912,737,929,728
  5. Step 5: Solve for x
    x = 1,229,252,912,737,929,728/1,242,243,028.40
  6. Step 6: Final answer
    x = 989,543,015.85

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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.