Finding the Fourth Proportional to 716,119.99, 988,225.85 and 393,830.08
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Solution
The fourth proportional to 716,119.99, 988,225.85 and 393,830.08 is: 543,474.65
Step by Step Solution
- Step 1: Write the proportion equation
716,119.99 : 988,225.85 = 393,830.08 : x - Step 2: Convert to fraction form
716,119.99/988,225.85 = 393,830.08/x - Step 3: Cross multiply
716,119.99x = 988,225.85 × 393,830.08 - Step 4: Simplify right side
716,119.99x = 389,193,058,653.29 - Step 5: Solve for x
x = 389,193,058,653.29/716,119.99 - Step 6: Final answer
x = 543,474.65
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1.5x scale
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.