Finding the Fourth Proportional to 1,387,373,927.08, 2,081,061,590.46 and 418,025,543.08
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Solution
The fourth proportional to 1,387,373,927.08, 2,081,061,590.46 and 418,025,543.08 is: 627,038,525.49
Step by Step Solution
- Step 1: Write the proportion equation
1,387,373,927.08 : 2,081,061,590.46 = 418,025,543.08 : x - Step 2: Convert to fraction form
1,387,373,927.08/2,081,061,590.46 = 418,025,543.08/x - Step 3: Cross multiply
1,387,373,927.08x = 2,081,061,590.46 × 418,025,543.08 - Step 4: Simplify right side
1,387,373,927.08x = 869,936,901,534,969,984 - Step 5: Solve for x
x = 869,936,901,534,969,984/1,387,373,927.08 - Step 6: Final answer
x = 627,038,525.49
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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.