Finding the Fourth Proportional to 717,347.78, 989,927.97 and 395,087.87
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Solution
The fourth proportional to 717,347.78, 989,927.97 and 395,087.87 is: 545,214.66
Step by Step Solution
- Step 1: Write the proportion equation
717,347.78 : 989,927.97 = 395,087.87 : x - Step 2: Convert to fraction form
717,347.78/989,927.97 = 395,087.87/x - Step 3: Cross multiply
717,347.78x = 989,927.97 × 395,087.87 - Step 4: Simplify right side
717,347.78x = 391,108,528,171.08 - Step 5: Solve for x
x = 391,108,528,171.08/717,347.78 - Step 6: Final answer
x = 545,214.66
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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.