Finding the Fourth Proportional to 716,118.69, 988,224.06 and 393,828.75
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Solution
The fourth proportional to 716,118.69, 988,224.06 and 393,828.75 is: 543,472.83
Step by Step Solution
- Step 1: Write the proportion equation
716,118.69 : 988,224.06 = 393,828.75 : x - Step 2: Convert to fraction form
716,118.69/988,224.06 = 393,828.75/x - Step 3: Cross multiply
716,118.69x = 988,224.06 × 393,828.75 - Step 4: Simplify right side
716,118.69x = 389,191,047,746.58 - Step 5: Solve for x
x = 389,191,047,746.58/716,118.69 - Step 6: Final answer
x = 543,472.83
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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.