Finding the Fourth Proportional to 1,207,814.32, 1,666,789.17 and 663,985.09
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Solution
The fourth proportional to 1,207,814.32, 1,666,789.17 and 663,985.09 is: 916,302.39
Step by Step Solution
- Step 1: Write the proportion equation
1,207,814.32 : 1,666,789.17 = 663,985.09 : x - Step 2: Convert to fraction form
1,207,814.32/1,666,789.17 = 663,985.09/x - Step 3: Cross multiply
1,207,814.32x = 1,666,789.17 × 663,985.09 - Step 4: Simplify right side
1,207,814.32x = 1,106,723,148,719.53 - Step 5: Solve for x
x = 1,106,723,148,719.53/1,207,814.32 - Step 6: Final answer
x = 916,302.39
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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.