Finding the Fourth Proportional to 640,828.68, 884,727.30 and 399,438.21
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Solution
The fourth proportional to 640,828.68, 884,727.30 and 399,438.21 is: 551,463.91
Step by Step Solution
- Step 1: Write the proportion equation
640,828.68 : 884,727.30 = 399,438.21 : x - Step 2: Convert to fraction form
640,828.68/884,727.30 = 399,438.21/x - Step 3: Cross multiply
640,828.68x = 884,727.30 × 399,438.21 - Step 4: Simplify right side
640,828.68x = 353,393,889,050.13 - Step 5: Solve for x
x = 353,393,889,050.13/640,828.68 - Step 6: Final answer
x = 551,463.91
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.