Finding the Fourth Proportional to 1,288,148.08, 1,777,699.88 and 715,188.28
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Solution
The fourth proportional to 1,288,148.08, 1,777,699.88 and 715,188.28 is: 986,990.66
Step by Step Solution
- Step 1: Write the proportion equation
1,288,148.08 : 1,777,699.88 = 715,188.28 : x - Step 2: Convert to fraction form
1,288,148.08/1,777,699.88 = 715,188.28/x - Step 3: Cross multiply
1,288,148.08x = 1,777,699.88 × 715,188.28 - Step 4: Simplify right side
1,288,148.08x = 1,271,390,119,533.41 - Step 5: Solve for x
x = 1,271,390,119,533.41/1,288,148.08 - Step 6: Final answer
x = 986,990.66
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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.