Finding the Fourth Proportional to 646,921.80, 970,382.70 and 366,985.80
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Solution
The fourth proportional to 646,921.80, 970,382.70 and 366,985.80 is: 550,478.70
Step by Step Solution
- Step 1: Write the proportion equation
646,921.80 : 970,382.70 = 366,985.80 : x - Step 2: Convert to fraction form
646,921.80/970,382.70 = 366,985.80/x - Step 3: Cross multiply
646,921.80x = 970,382.70 × 366,985.80 - Step 4: Simplify right side
646,921.80x = 356,116,671,465.66 - Step 5: Solve for x
x = 356,116,671,465.66/646,921.80 - Step 6: Final answer
x = 550,478.70
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.