Finding the Fourth Proportional to 1,298,415.15, 1,791,905.63 and 717,625.80
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Solution
The fourth proportional to 1,298,415.15, 1,791,905.63 and 717,625.80 is: 990,374.85
Step by Step Solution
- Step 1: Write the proportion equation
1,298,415.15 : 1,791,905.63 = 717,625.80 : x - Step 2: Convert to fraction form
1,298,415.15/1,791,905.63 = 717,625.80/x - Step 3: Cross multiply
1,298,415.15x = 1,791,905.63 × 717,625.80 - Step 4: Simplify right side
1,298,415.15x = 1,285,917,707,665.13 - Step 5: Solve for x
x = 1,285,917,707,665.13/1,298,415.15 - Step 6: Final answer
x = 990,374.85
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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.