Finding the Fourth Proportional to 639,863.68, 882,970.56 and 353,366.72
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Solution
The fourth proportional to 639,863.68, 882,970.56 and 353,366.72 is: 487,623.26
Step by Step Solution
- Step 1: Write the proportion equation
639,863.68 : 882,970.56 = 353,366.72 : x - Step 2: Convert to fraction form
639,863.68/882,970.56 = 353,366.72/x - Step 3: Cross multiply
639,863.68x = 882,970.56 × 353,366.72 - Step 4: Simplify right side
639,863.68x = 312,012,410,643.76 - Step 5: Solve for x
x = 312,012,410,643.76/639,863.68 - Step 6: Final answer
x = 487,623.26
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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.