Finding the Fourth Proportional to 717,397.12, 990,052.80 and 395,107.14
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Solution
The fourth proportional to 717,397.12, 990,052.80 and 395,107.14 is: 545,272.51
Step by Step Solution
- Step 1: Write the proportion equation
717,397.12 : 990,052.80 = 395,107.14 : x - Step 2: Convert to fraction form
717,397.12/990,052.80 = 395,107.14/x - Step 3: Cross multiply
717,397.12x = 990,052.80 × 395,107.14 - Step 4: Simplify right side
717,397.12x = 391,176,930,256.99 - Step 5: Solve for x
x = 391,176,930,256.99/717,397.12 - Step 6: Final answer
x = 545,272.51
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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.