Finding the Fourth Proportional to 1,643,784.08, 2,268,417.63 and 918,631.17
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Solution
The fourth proportional to 1,643,784.08, 2,268,417.63 and 918,631.17 is: 1,267,708.56
Step by Step Solution
- Step 1: Write the proportion equation
1,643,784.08 : 2,268,417.63 = 918,631.17 : x - Step 2: Convert to fraction form
1,643,784.08/2,268,417.63 = 918,631.17/x - Step 3: Cross multiply
1,643,784.08x = 2,268,417.63 × 918,631.17 - Step 4: Simplify right side
1,643,784.08x = 2,083,839,141,495.53 - Step 5: Solve for x
x = 2,083,839,141,495.53/1,643,784.08 - Step 6: Final answer
x = 1,267,708.56
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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.