Finding the Fourth Proportional to 717,599.40, 990,294.06 and 395,320.92
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Solution
The fourth proportional to 717,599.40, 990,294.06 and 395,320.92 is: 545,546.66
Step by Step Solution
- Step 1: Write the proportion equation
717,599.40 : 990,294.06 = 395,320.92 : x - Step 2: Convert to fraction form
717,599.40/990,294.06 = 395,320.92/x - Step 3: Cross multiply
717,599.40x = 990,294.06 × 395,320.92 - Step 4: Simplify right side
717,599.40x = 391,483,958,869.74 - Step 5: Solve for x
x = 391,483,958,869.74/717,599.40 - Step 6: Final answer
x = 545,546.66
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1.5x scale
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.