Finding the Fourth Proportional to 571,678.05, 788,930.63 and 313,566.28
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Solution
The fourth proportional to 571,678.05, 788,930.63 and 313,566.28 is: 432,729.65
Step by Step Solution
- Step 1: Write the proportion equation
571,678.05 : 788,930.63 = 313,566.28 : x - Step 2: Convert to fraction form
571,678.05/788,930.63 = 313,566.28/x - Step 3: Cross multiply
571,678.05x = 788,930.63 × 313,566.28 - Step 4: Simplify right side
571,678.05x = 247,382,041,259.33 - Step 5: Solve for x
x = 247,382,041,259.33/571,678.05 - Step 6: Final answer
x = 432,729.65
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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.