Finding the Fourth Proportional to 1,306,979.12, 1,803,419.64 and 816,890.84
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Solution
The fourth proportional to 1,306,979.12, 1,803,419.64 and 816,890.84 is: 1,127,177.14
Step by Step Solution
- Step 1: Write the proportion equation
1,306,979.12 : 1,803,419.64 = 816,890.84 : x - Step 2: Convert to fraction form
1,306,979.12/1,803,419.64 = 816,890.84/x - Step 3: Cross multiply
1,306,979.12x = 1,803,419.64 × 816,890.84 - Step 4: Simplify right side
1,306,979.12x = 1,473,196,984,592.10 - Step 5: Solve for x
x = 1,473,196,984,592.10/1,306,979.12 - Step 6: Final answer
x = 1,127,177.14
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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.