Finding the Fourth Proportional to 717,207.60, 989,753.82 and 394,947.66
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Solution
The fourth proportional to 717,207.60, 989,753.82 and 394,947.66 is: 545,031.81
Step by Step Solution
- Step 1: Write the proportion equation
717,207.60 : 989,753.82 = 394,947.66 : x - Step 2: Convert to fraction form
717,207.60/989,753.82 = 394,947.66/x - Step 3: Cross multiply
717,207.60x = 989,753.82 × 394,947.66 - Step 4: Simplify right side
717,207.60x = 390,900,955,185.06 - Step 5: Solve for x
x = 390,900,955,185.06/717,207.60 - Step 6: Final answer
x = 545,031.81
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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.