Finding the Fourth Proportional to 717,894.30, 990,700.81 and 395,615.96
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Solution
The fourth proportional to 717,894.30, 990,700.81 and 395,615.96 is: 545,953.70
Step by Step Solution
- Step 1: Write the proportion equation
717,894.30 : 990,700.81 = 395,615.96 : x - Step 2: Convert to fraction form
717,894.30/990,700.81 = 395,615.96/x - Step 3: Cross multiply
717,894.30x = 990,700.81 × 395,615.96 - Step 4: Simplify right side
717,894.30x = 391,937,049,793.51 - Step 5: Solve for x
x = 391,937,049,793.51/717,894.30 - Step 6: Final answer
x = 545,953.70
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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.