Finding the Fourth Proportional to 1,537,390.80, 2,121,555.24 and 858,312.72
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Solution
The fourth proportional to 1,537,390.80, 2,121,555.24 and 858,312.72 is: 1,184,446.95
Step by Step Solution
- Step 1: Write the proportion equation
1,537,390.80 : 2,121,555.24 = 858,312.72 : x - Step 2: Convert to fraction form
1,537,390.80/2,121,555.24 = 858,312.72/x - Step 3: Cross multiply
1,537,390.80x = 2,121,555.24 × 858,312.72 - Step 4: Simplify right side
1,537,390.80x = 1,820,957,848,674.65 - Step 5: Solve for x
x = 1,820,957,848,674.65/1,537,390.80 - Step 6: Final answer
x = 1,184,446.95
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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.