Finding the Fourth Proportional to 7,990,862.64, 11,030,389.18 and 5,237,727.44
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Solution
The fourth proportional to 7,990,862.64, 11,030,389.18 and 5,237,727.44 is: 7,230,029.43
Step by Step Solution
- Step 1: Write the proportion equation
7,990,862.64 : 11,030,389.18 = 5,237,727.44 : x - Step 2: Convert to fraction form
7,990,862.64/11,030,389.18 = 5,237,727.44/x - Step 3: Cross multiply
7,990,862.64x = 11,030,389.18 × 5,237,727.44 - Step 4: Simplify right side
7,990,862.64x = 57,774,172,081,965.10 - Step 5: Solve for x
x = 57,774,172,081,965.10/7,990,862.64 - Step 6: Final answer
x = 7,230,029.43
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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.