Finding the Fourth Proportional to 781,729.51, 1,172,603.99 and 213,138.67
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Solution
The fourth proportional to 781,729.51, 1,172,603.99 and 213,138.67 is: 319,710.66
Step by Step Solution
- Step 1: Write the proportion equation
781,729.51 : 1,172,603.99 = 213,138.67 : x - Step 2: Convert to fraction form
781,729.51/1,172,603.99 = 213,138.67/x - Step 3: Cross multiply
781,729.51x = 1,172,603.99 × 213,138.67 - Step 4: Simplify right side
781,729.51x = 249,927,255,664.99 - Step 5: Solve for x
x = 249,927,255,664.99/781,729.51 - Step 6: Final answer
x = 319,710.66
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.