Finding the Fourth Proportional to 756,371.70, 1,134,557.55 and 686,387.70
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Solution
The fourth proportional to 756,371.70, 1,134,557.55 and 686,387.70 is: 1,029,581.55
Step by Step Solution
- Step 1: Write the proportion equation
756,371.70 : 1,134,557.55 = 686,387.70 : x - Step 2: Convert to fraction form
756,371.70/1,134,557.55 = 686,387.70/x - Step 3: Cross multiply
756,371.70x = 1,134,557.55 × 686,387.70 - Step 4: Simplify right side
756,371.70x = 778,746,347,262.14 - Step 5: Solve for x
x = 778,746,347,262.14/756,371.70 - Step 6: Final answer
x = 1,029,581.55
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.