Finding the Fourth Proportional to 717,455.97, 990,134.10 and 395,165.97
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Solution
The fourth proportional to 717,455.97, 990,134.10 and 395,165.97 is: 545,353.75
Step by Step Solution
- Step 1: Write the proportion equation
717,455.97 : 990,134.10 = 395,165.97 : x - Step 2: Convert to fraction form
717,455.97/990,134.10 = 395,165.97/x - Step 3: Cross multiply
717,455.97x = 990,134.10 × 395,165.97 - Step 4: Simplify right side
717,455.97x = 391,267,302,056.58 - Step 5: Solve for x
x = 391,267,302,056.58/717,455.97 - Step 6: Final answer
x = 545,353.75
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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.