Finding the Fourth Proportional to 698,716.13, 963,955.08 and 392,722.32
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Solution
The fourth proportional to 698,716.13, 963,955.08 and 392,722.32 is: 541,803.27
Step by Step Solution
- Step 1: Write the proportion equation
698,716.13 : 963,955.08 = 392,722.32 : x - Step 2: Convert to fraction form
698,716.13/963,955.08 = 392,722.32/x - Step 3: Cross multiply
698,716.13x = 963,955.08 × 392,722.32 - Step 4: Simplify right side
698,716.13x = 378,566,679,008.22 - Step 5: Solve for x
x = 378,566,679,008.22/698,716.13 - Step 6: Final answer
x = 541,803.27
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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.