Finding the Fourth Proportional to 1,291,347.63, 1,781,578.40 and 807,729.03
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Solution
The fourth proportional to 1,291,347.63, 1,781,578.40 and 807,729.03 is: 1,114,364.99
Step by Step Solution
- Step 1: Write the proportion equation
1,291,347.63 : 1,781,578.40 = 807,729.03 : x - Step 2: Convert to fraction form
1,291,347.63/1,781,578.40 = 807,729.03/x - Step 3: Cross multiply
1,291,347.63x = 1,781,578.40 × 807,729.03 - Step 4: Simplify right side
1,291,347.63x = 1,439,032,588,862.31 - Step 5: Solve for x
x = 1,439,032,588,862.31/1,291,347.63 - Step 6: Final answer
x = 1,114,364.99
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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.