Finding the Fourth Proportional to 528,508.80, 729,338.44 and 286,785.23
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Solution
The fourth proportional to 528,508.80, 729,338.44 and 286,785.23 is: 395,761.61
Step by Step Solution
- Step 1: Write the proportion equation
528,508.80 : 729,338.44 = 286,785.23 : x - Step 2: Convert to fraction form
528,508.80/729,338.44 = 286,785.23/x - Step 3: Cross multiply
528,508.80x = 729,338.44 × 286,785.23 - Step 4: Simplify right side
528,508.80x = 209,163,492,263.24 - Step 5: Solve for x
x = 209,163,492,263.24/528,508.80 - Step 6: Final answer
x = 395,761.61
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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.