Finding the Fourth Proportional to 642,529.93, 886,696.58 and 356,054.80
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Solution
The fourth proportional to 642,529.93, 886,696.58 and 356,054.80 is: 491,358.55
Step by Step Solution
- Step 1: Write the proportion equation
642,529.93 : 886,696.58 = 356,054.80 : x - Step 2: Convert to fraction form
642,529.93/886,696.58 = 356,054.80/x - Step 3: Cross multiply
642,529.93x = 886,696.58 × 356,054.80 - Step 4: Simplify right side
642,529.93x = 315,712,572,125.98 - Step 5: Solve for x
x = 315,712,572,125.98/642,529.93 - Step 6: Final answer
x = 491,358.55
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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.