Finding the Fourth Proportional to 1,210,812.88, 1,670,860.02 and 666,936.96
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Solution
The fourth proportional to 1,210,812.88, 1,670,860.02 and 666,936.96 is: 920,338.99
Step by Step Solution
- Step 1: Write the proportion equation
1,210,812.88 : 1,670,860.02 = 666,936.96 : x - Step 2: Convert to fraction form
1,210,812.88/1,670,860.02 = 666,936.96/x - Step 3: Cross multiply
1,210,812.88x = 1,670,860.02 × 666,936.96 - Step 4: Simplify right side
1,210,812.88x = 1,114,358,302,324.34 - Step 5: Solve for x
x = 1,114,358,302,324.34/1,210,812.88 - Step 6: Final answer
x = 920,338.99
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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.