Finding the Fourth Proportional to 1,007,278.68, 1,390,042.08 and 554,569.68
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Solution
The fourth proportional to 1,007,278.68, 1,390,042.08 and 554,569.68 is: 765,304.78
Step by Step Solution
- Step 1: Write the proportion equation
1,007,278.68 : 1,390,042.08 = 554,569.68 : x - Step 2: Convert to fraction form
1,007,278.68/1,390,042.08 = 554,569.68/x - Step 3: Cross multiply
1,007,278.68x = 1,390,042.08 × 554,569.68 - Step 4: Simplify right side
1,007,278.68x = 770,875,191,492.14 - Step 5: Solve for x
x = 770,875,191,492.14/1,007,278.68 - Step 6: Final answer
x = 765,304.78
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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.