Finding the Fourth Proportional to 1,163,431.23, 1,605,339.45 and 647,117.79
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Solution
The fourth proportional to 1,163,431.23, 1,605,339.45 and 647,117.79 is: 892,913.73
Step by Step Solution
- Step 1: Write the proportion equation
1,163,431.23 : 1,605,339.45 = 647,117.79 : x - Step 2: Convert to fraction form
1,163,431.23/1,605,339.45 = 647,117.79/x - Step 3: Cross multiply
1,163,431.23x = 1,605,339.45 × 647,117.79 - Step 4: Simplify right side
1,163,431.23x = 1,038,843,717,083.82 - Step 5: Solve for x
x = 1,038,843,717,083.82/1,163,431.23 - Step 6: Final answer
x = 892,913.73
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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.