Finding the Fourth Proportional to 1,285,070.55, 1,927,771.07 and 431,773.62
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Solution
The fourth proportional to 1,285,070.55, 1,927,771.07 and 431,773.62 is: 647,715.95
Step by Step Solution
- Step 1: Write the proportion equation
1,285,070.55 : 1,927,771.07 = 431,773.62 : x - Step 2: Convert to fraction form
1,285,070.55/1,927,771.07 = 431,773.62/x - Step 3: Cross multiply
1,285,070.55x = 1,927,771.07 × 431,773.62 - Step 4: Simplify right side
1,285,070.55x = 832,360,691,266.31 - Step 5: Solve for x
x = 832,360,691,266.31/1,285,070.55 - Step 6: Final answer
x = 647,715.95
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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.