Finding the Fourth Proportional to 861,492.95, 1,292,357.28 and 292,721.08
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Solution
The fourth proportional to 861,492.95, 1,292,357.28 and 292,721.08 is: 439,121.66
Step by Step Solution
- Step 1: Write the proportion equation
861,492.95 : 1,292,357.28 = 292,721.08 : x - Step 2: Convert to fraction form
861,492.95/1,292,357.28 = 292,721.08/x - Step 3: Cross multiply
861,492.95x = 1,292,357.28 × 292,721.08 - Step 4: Simplify right side
861,492.95x = 378,300,212,285.68 - Step 5: Solve for x
x = 378,300,212,285.68/861,492.95 - Step 6: Final answer
x = 439,121.66
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1.5x scale
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.