Finding the Fourth Proportional to 728,818.06, 1,005,813.98 and 402,129.48
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Solution
The fourth proportional to 728,818.06, 1,005,813.98 and 402,129.48 is: 554,963.54
Step by Step Solution
- Step 1: Write the proportion equation
728,818.06 : 1,005,813.98 = 402,129.48 : x - Step 2: Convert to fraction form
728,818.06/1,005,813.98 = 402,129.48/x - Step 3: Cross multiply
728,818.06x = 1,005,813.98 × 402,129.48 - Step 4: Simplify right side
728,818.06x = 404,467,452,754.13 - Step 5: Solve for x
x = 404,467,452,754.13/728,818.06 - Step 6: Final answer
x = 554,963.54
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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.