Finding the Fourth Proportional to 571,631.76, 788,859.84 and 313,531.20
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Solution
The fourth proportional to 571,631.76, 788,859.84 and 313,531.20 is: 432,677.45
Step by Step Solution
- Step 1: Write the proportion equation
571,631.76 : 788,859.84 = 313,531.20 : x - Step 2: Convert to fraction form
571,631.76/788,859.84 = 313,531.20/x - Step 3: Cross multiply
571,631.76x = 788,859.84 × 313,531.20 - Step 4: Simplify right side
571,631.76x = 247,332,172,267.01 - Step 5: Solve for x
x = 247,332,172,267.01/571,631.76 - Step 6: Final answer
x = 432,677.45
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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.