Finding the Fourth Proportional to 840,783.24, 1,160,274.49 and 478,206.65
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Solution
The fourth proportional to 840,783.24, 1,160,274.49 and 478,206.65 is: 659,921.55
Step by Step Solution
- Step 1: Write the proportion equation
840,783.24 : 1,160,274.49 = 478,206.65 : x - Step 2: Convert to fraction form
840,783.24/1,160,274.49 = 478,206.65/x - Step 3: Cross multiply
840,783.24x = 1,160,274.49 × 478,206.65 - Step 4: Simplify right side
840,783.24x = 554,850,978,648.53 - Step 5: Solve for x
x = 554,850,978,648.53/840,783.24 - Step 6: Final answer
x = 659,921.55
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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.