Finding the Fourth Proportional to 1,188,454,965.40, 1,782,682,448.10 and 728,652,212.20
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Solution
The fourth proportional to 1,188,454,965.40, 1,782,682,448.10 and 728,652,212.20 is: 1,092,978,318.30
Step by Step Solution
- Step 1: Write the proportion equation
1,188,454,965.40 : 1,782,682,448.10 = 728,652,212.20 : x - Step 2: Convert to fraction form
1,188,454,965.40/1,782,682,448.10 = 728,652,212.20/x - Step 3: Cross multiply
1,188,454,965.40x = 1,782,682,448.10 × 728,652,212.20 - Step 4: Simplify right side
1,188,454,965.40x = 1,298,955,509,458,176,768 - Step 5: Solve for x
x = 1,298,955,509,458,176,768/1,188,454,965.40 - Step 6: Final answer
x = 1,092,978,318.30
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.