Finding the Fourth Proportional to 768,442.79, 1,061,133.55 and 478,552.14
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Solution
The fourth proportional to 768,442.79, 1,061,133.55 and 478,552.14 is: 660,826.98
Step by Step Solution
- Step 1: Write the proportion equation
768,442.79 : 1,061,133.55 = 478,552.14 : x - Step 2: Convert to fraction form
768,442.79/1,061,133.55 = 478,552.14/x - Step 3: Cross multiply
768,442.79x = 1,061,133.55 × 478,552.14 - Step 4: Simplify right side
768,442.79x = 507,807,731,178.30 - Step 5: Solve for x
x = 507,807,731,178.30/768,442.79 - Step 6: Final answer
x = 660,826.98
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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.