Finding the Fourth Proportional to 1,277,561.79, 1,916,343.50 and 716,989.95
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Solution
The fourth proportional to 1,277,561.79, 1,916,343.50 and 716,989.95 is: 1,075,485.38
Step by Step Solution
- Step 1: Write the proportion equation
1,277,561.79 : 1,916,343.50 = 716,989.95 : x - Step 2: Convert to fraction form
1,277,561.79/1,916,343.50 = 716,989.95/x - Step 3: Cross multiply
1,277,561.79x = 1,916,343.50 × 716,989.95 - Step 4: Simplify right side
1,277,561.79x = 1,373,999,026,662.88 - Step 5: Solve for x
x = 1,373,999,026,662.88/1,277,561.79 - Step 6: Final answer
x = 1,075,485.38
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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.