Finding the Fourth Proportional to 1,151,452,187.72, 1,727,183,317.18 and 364,509,683.08
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Solution
The fourth proportional to 1,151,452,187.72, 1,727,183,317.18 and 364,509,683.08 is: 546,766,118.72
Step by Step Solution
- Step 1: Write the proportion equation
1,151,452,187.72 : 1,727,183,317.18 = 364,509,683.08 : x - Step 2: Convert to fraction form
1,151,452,187.72/1,727,183,317.18 = 364,509,683.08/x - Step 3: Cross multiply
1,151,452,187.72x = 1,727,183,317.18 × 364,509,683.08 - Step 4: Simplify right side
1,151,452,187.72x = 629,575,043,566,344,960 - Step 5: Solve for x
x = 629,575,043,566,344,960/1,151,452,187.72 - Step 6: Final answer
x = 546,766,118.72
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Double scale
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1.5x scale
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.