Finding the Fourth Proportional to 1,557,616.80, 2,149,421.49 and 869,234.67
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Solution
The fourth proportional to 1,557,616.80, 2,149,421.49 and 869,234.67 is: 1,199,493.79
Step by Step Solution
- Step 1: Write the proportion equation
1,557,616.80 : 2,149,421.49 = 869,234.67 : x - Step 2: Convert to fraction form
1,557,616.80/2,149,421.49 = 869,234.67/x - Step 3: Cross multiply
1,557,616.80x = 2,149,421.49 × 869,234.67 - Step 4: Simplify right side
1,557,616.80x = 1,868,351,679,551.06 - Step 5: Solve for x
x = 1,868,351,679,551.06/1,557,616.80 - Step 6: Final answer
x = 1,199,493.79
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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.