Finding the Fourth Proportional to 717,898.10, 990,705.93 and 395,619.76
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Solution
The fourth proportional to 717,898.10, 990,705.93 and 395,619.76 is: 545,958.88
Step by Step Solution
- Step 1: Write the proportion equation
717,898.10 : 990,705.93 = 395,619.76 : x - Step 2: Convert to fraction form
717,898.10/990,705.93 = 395,619.76/x - Step 3: Cross multiply
717,898.10x = 990,705.93 × 395,619.76 - Step 4: Simplify right side
717,898.10x = 391,942,842,257.18 - Step 5: Solve for x
x = 391,942,842,257.18/717,898.10 - Step 6: Final answer
x = 545,958.88
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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.