Finding the Fourth Proportional to 3,929,974.29, 5,423,326.25 and 2,187,616.05
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Solution
The fourth proportional to 3,929,974.29, 5,423,326.25 and 2,187,616.05 is: 3,018,888.84
Step by Step Solution
- Step 1: Write the proportion equation
3,929,974.29 : 5,423,326.25 = 2,187,616.05 : x - Step 2: Convert to fraction form
3,929,974.29/5,423,326.25 = 2,187,616.05/x - Step 3: Cross multiply
3,929,974.29x = 5,423,326.25 × 2,187,616.05 - Step 4: Simplify right side
3,929,974.29x = 11,864,155,537,948.23 - Step 5: Solve for x
x = 11,864,155,537,948.23/3,929,974.29 - Step 6: Final answer
x = 3,018,888.84
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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.