Finding the Fourth Proportional to 668,170.80, 922,209.66 and 396,389.55
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Solution
The fourth proportional to 668,170.80, 922,209.66 and 396,389.55 is: 547,097.05
Step by Step Solution
- Step 1: Write the proportion equation
668,170.80 : 922,209.66 = 396,389.55 : x - Step 2: Convert to fraction form
668,170.80/922,209.66 = 396,389.55/x - Step 3: Cross multiply
668,170.80x = 922,209.66 × 396,389.55 - Step 4: Simplify right side
668,170.80x = 365,554,272,133.05 - Step 5: Solve for x
x = 365,554,272,133.05/668,170.80 - Step 6: Final answer
x = 547,097.05
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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.