Finding the Fourth Proportional to 1,283,689.20, 1,771,515.72 and 767,974.08
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Solution
The fourth proportional to 1,283,689.20, 1,771,515.72 and 767,974.08 is: 1,059,818.96
Step by Step Solution
- Step 1: Write the proportion equation
1,283,689.20 : 1,771,515.72 = 767,974.08 : x - Step 2: Convert to fraction form
1,283,689.20/1,771,515.72 = 767,974.08/x - Step 3: Cross multiply
1,283,689.20x = 1,771,515.72 × 767,974.08 - Step 4: Simplify right side
1,283,689.20x = 1,360,478,155,272.54 - Step 5: Solve for x
x = 1,360,478,155,272.54/1,283,689.20 - Step 6: Final answer
x = 1,059,818.96
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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.