Finding the Fourth Proportional to 1,098,065.36, 1,513,963.68 and 840,261.80
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Solution
The fourth proportional to 1,098,065.36, 1,513,963.68 and 840,261.80 is: 1,158,515.60
Step by Step Solution
- Step 1: Write the proportion equation
1,098,065.36 : 1,513,963.68 = 840,261.80 : x - Step 2: Convert to fraction form
1,098,065.36/1,513,963.68 = 840,261.80/x - Step 3: Cross multiply
1,098,065.36x = 1,513,963.68 × 840,261.80 - Step 4: Simplify right side
1,098,065.36x = 1,272,125,846,891.42 - Step 5: Solve for x
x = 1,272,125,846,891.42/1,098,065.36 - Step 6: Final answer
x = 1,158,515.60
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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.