Finding the Fourth Proportional to 2,163,235.47, 2,985,664.32 and 1,389,833.13
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Solution
The fourth proportional to 2,163,235.47, 2,985,664.32 and 1,389,833.13 is: 1,918,226.31
Step by Step Solution
- Step 1: Write the proportion equation
2,163,235.47 : 2,985,664.32 = 1,389,833.13 : x - Step 2: Convert to fraction form
2,163,235.47/2,985,664.32 = 1,389,833.13/x - Step 3: Cross multiply
2,163,235.47x = 2,985,664.32 × 1,389,833.13 - Step 4: Simplify right side
2,163,235.47x = 4,149,575,186,994.92 - Step 5: Solve for x
x = 4,149,575,186,994.92/2,163,235.47 - Step 6: Final answer
x = 1,918,226.31
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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.