Finding the Fourth Proportional to 1,219,686.70, 1,683,165.99 and 675,857.71
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Solution
The fourth proportional to 1,219,686.70, 1,683,165.99 and 675,857.71 is: 932,682.72
Step by Step Solution
- Step 1: Write the proportion equation
1,219,686.70 : 1,683,165.99 = 675,857.71 : x - Step 2: Convert to fraction form
1,219,686.70/1,683,165.99 = 675,857.71/x - Step 3: Cross multiply
1,219,686.70x = 1,683,165.99 × 675,857.71 - Step 4: Simplify right side
1,219,686.70x = 1,137,580,711,551.28 - Step 5: Solve for x
x = 1,137,580,711,551.28/1,219,686.70 - Step 6: Final answer
x = 932,682.72
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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.