Finding the Fourth Proportional to 717,811.93, 990,624.58 and 395,521.94
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Solution
The fourth proportional to 717,811.93, 990,624.58 and 395,521.94 is: 545,844.59
Step by Step Solution
- Step 1: Write the proportion equation
717,811.93 : 990,624.58 = 395,521.94 : x - Step 2: Convert to fraction form
717,811.93/990,624.58 = 395,521.94/x - Step 3: Cross multiply
717,811.93x = 990,624.58 × 395,521.94 - Step 4: Simplify right side
717,811.93x = 391,813,754,205.53 - Step 5: Solve for x
x = 391,813,754,205.53/717,811.93 - Step 6: Final answer
x = 545,844.59
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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.