Finding the Fourth Proportional to 928,782.06, 1,281,729.95 and 515,326.60
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Solution
The fourth proportional to 928,782.06, 1,281,729.95 and 515,326.60 is: 711,156.65
Step by Step Solution
- Step 1: Write the proportion equation
928,782.06 : 1,281,729.95 = 515,326.60 : x - Step 2: Convert to fraction form
928,782.06/1,281,729.95 = 515,326.60/x - Step 3: Cross multiply
928,782.06x = 1,281,729.95 × 515,326.60 - Step 4: Simplify right side
928,782.06x = 660,509,537,251.67 - Step 5: Solve for x
x = 660,509,537,251.67/928,782.06 - Step 6: Final answer
x = 711,156.65
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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.