Finding the Fourth Proportional to 12,288,623.10, 18,446,931.45 and 7,242,776.70
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Solution
The fourth proportional to 12,288,623.10, 18,446,931.45 and 7,242,776.70 is: 10,872,414.61
Step by Step Solution
- Step 1: Write the proportion equation
12,288,623.10 : 18,446,931.45 = 7,242,776.70 : x - Step 2: Convert to fraction form
12,288,623.10/18,446,931.45 = 7,242,776.70/x - Step 3: Cross multiply
12,288,623.10x = 18,446,931.45 × 7,242,776.70 - Step 4: Simplify right side
12,288,623.10x = 133,607,005,292,557.22 - Step 5: Solve for x
x = 133,607,005,292,557.22/12,288,623.10 - Step 6: Final answer
x = 10,872,414.61
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.