Finding the Fourth Proportional to 7,990,875.65, 11,030,407.14 and 5,237,740.40
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Solution
The fourth proportional to 7,990,875.65, 11,030,407.14 and 5,237,740.40 is: 7,230,047.32
Step by Step Solution
- Step 1: Write the proportion equation
7,990,875.65 : 11,030,407.14 = 5,237,740.40 : x - Step 2: Convert to fraction form
7,990,875.65/11,030,407.14 = 5,237,740.40/x - Step 3: Cross multiply
7,990,875.65x = 11,030,407.14 × 5,237,740.40 - Step 4: Simplify right side
7,990,875.65x = 57,774,409,105,626.46 - Step 5: Solve for x
x = 57,774,409,105,626.46/7,990,875.65 - Step 6: Final answer
x = 7,230,047.32
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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.