Finding the Fourth Proportional to 7,876,478.61, 10,871,562.87 and 5,130,009.99
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Solution
The fourth proportional to 7,876,478.61, 10,871,562.87 and 5,130,009.99 is: 7,080,730.98
Step by Step Solution
- Step 1: Write the proportion equation
7,876,478.61 : 10,871,562.87 = 5,130,009.99 : x - Step 2: Convert to fraction form
7,876,478.61/10,871,562.87 = 5,130,009.99/x - Step 3: Cross multiply
7,876,478.61x = 10,871,562.87 × 5,130,009.99 - Step 4: Simplify right side
7,876,478.61x = 55,771,226,130,013.07 - Step 5: Solve for x
x = 55,771,226,130,013.07/7,876,478.61 - Step 6: Final answer
x = 7,080,730.98
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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.