Finding the Fourth Proportional to 918,974.84, 1,268,243.34 and 516,592.76
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Solution
The fourth proportional to 918,974.84, 1,268,243.34 and 516,592.76 is: 712,930.65
Step by Step Solution
- Step 1: Write the proportion equation
918,974.84 : 1,268,243.34 = 516,592.76 : x - Step 2: Convert to fraction form
918,974.84/1,268,243.34 = 516,592.76/x - Step 3: Cross multiply
918,974.84x = 1,268,243.34 × 516,592.76 - Step 4: Simplify right side
918,974.84x = 655,165,327,362.22 - Step 5: Solve for x
x = 655,165,327,362.22/918,974.84 - Step 6: Final answer
x = 712,930.65
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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.