Finding the Fourth Proportional to 678,811.80, 936,802.62 and 377,005.08
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Solution
The fourth proportional to 678,811.80, 936,802.62 and 377,005.08 is: 520,290.52
Step by Step Solution
- Step 1: Write the proportion equation
678,811.80 : 936,802.62 = 377,005.08 : x - Step 2: Convert to fraction form
678,811.80/936,802.62 = 377,005.08/x - Step 3: Cross multiply
678,811.80x = 936,802.62 × 377,005.08 - Step 4: Simplify right side
678,811.80x = 353,179,346,697.31 - Step 5: Solve for x
x = 353,179,346,697.31/678,811.80 - Step 6: Final answer
x = 520,290.52
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1.5x scale
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.