Finding the Fourth Proportional to 678,803.60, 1,017,946.20 and 205,331.60
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Solution
The fourth proportional to 678,803.60, 1,017,946.20 and 205,331.60 is: 307,918.99
Step by Step Solution
- Step 1: Write the proportion equation
678,803.60 : 1,017,946.20 = 205,331.60 : x - Step 2: Convert to fraction form
678,803.60/1,017,946.20 = 205,331.60/x - Step 3: Cross multiply
678,803.60x = 1,017,946.20 × 205,331.60 - Step 4: Simplify right side
678,803.60x = 209,016,521,959.92 - Step 5: Solve for x
x = 209,016,521,959.92/678,803.60 - Step 6: Final answer
x = 307,918.99
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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.