Finding the Fourth Proportional to 554,428.74, 765,110.61 and 312,710.57
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Solution
The fourth proportional to 554,428.74, 765,110.61 and 312,710.57 is: 431,539.99
Step by Step Solution
- Step 1: Write the proportion equation
554,428.74 : 765,110.61 = 312,710.57 : x - Step 2: Convert to fraction form
554,428.74/765,110.61 = 312,710.57/x - Step 3: Cross multiply
554,428.74x = 765,110.61 × 312,710.57 - Step 4: Simplify right side
554,428.74x = 239,258,171,140.60 - Step 5: Solve for x
x = 239,258,171,140.60/554,428.74 - Step 6: Final answer
x = 431,539.99
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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.