Finding the Fourth Proportional to 1,318,986.48, 1,820,204.55 and 715,374.48
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Solution
The fourth proportional to 1,318,986.48, 1,820,204.55 and 715,374.48 is: 987,218.52
Step by Step Solution
- Step 1: Write the proportion equation
1,318,986.48 : 1,820,204.55 = 715,374.48 : x - Step 2: Convert to fraction form
1,318,986.48/1,820,204.55 = 715,374.48/x - Step 3: Cross multiply
1,318,986.48x = 1,820,204.55 × 715,374.48 - Step 4: Simplify right side
1,318,986.48x = 1,302,127,883,449.88 - Step 5: Solve for x
x = 1,302,127,883,449.88/1,318,986.48 - Step 6: Final answer
x = 987,218.52
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.