Finding the Fourth Proportional to 640,071.12, 883,324.98 and 368,139.09
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Solution
The fourth proportional to 640,071.12, 883,324.98 and 368,139.09 is: 508,047.38
Step by Step Solution
- Step 1: Write the proportion equation
640,071.12 : 883,324.98 = 368,139.09 : x - Step 2: Convert to fraction form
640,071.12/883,324.98 = 368,139.09/x - Step 3: Cross multiply
640,071.12x = 883,324.98 × 368,139.09 - Step 4: Simplify right side
640,071.12x = 325,186,454,311.47 - Step 5: Solve for x
x = 325,186,454,311.47/640,071.12 - Step 6: Final answer
x = 508,047.38
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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.