Finding the Fourth Proportional to 717,756.12, 990,547.52 and 395,466.14
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Solution
The fourth proportional to 717,756.12, 990,547.52 and 395,466.14 is: 545,767.56
Step by Step Solution
- Step 1: Write the proportion equation
717,756.12 : 990,547.52 = 395,466.14 : x - Step 2: Convert to fraction form
717,756.12/990,547.52 = 395,466.14/x - Step 3: Cross multiply
717,756.12x = 990,547.52 × 395,466.14 - Step 4: Simplify right side
717,756.12x = 391,728,004,220.97 - Step 5: Solve for x
x = 391,728,004,220.97/717,756.12 - Step 6: Final answer
x = 545,767.56
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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.