Finding the Fourth Proportional to 717,489.68, 990,180.72 and 395,199.68
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Solution
The fourth proportional to 717,489.68, 990,180.72 and 395,199.68 is: 545,400.32
Step by Step Solution
- Step 1: Write the proportion equation
717,489.68 : 990,180.72 = 395,199.68 : x - Step 2: Convert to fraction form
717,489.68/990,180.72 = 395,199.68/x - Step 3: Cross multiply
717,489.68x = 990,180.72 × 395,199.68 - Step 4: Simplify right side
717,489.68x = 391,319,103,686.17 - Step 5: Solve for x
x = 391,319,103,686.17/717,489.68 - Step 6: Final answer
x = 545,400.32
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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.