Finding the Fourth Proportional to 709,818.18, 979,563.94 and 387,541.86
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Solution
The fourth proportional to 709,818.18, 979,563.94 and 387,541.86 is: 534,815.88
Step by Step Solution
- Step 1: Write the proportion equation
709,818.18 : 979,563.94 = 387,541.86 : x - Step 2: Convert to fraction form
709,818.18/979,563.94 = 387,541.86/x - Step 3: Cross multiply
709,818.18x = 979,563.94 × 387,541.86 - Step 4: Simplify right side
709,818.18x = 379,622,031,296.53 - Step 5: Solve for x
x = 379,622,031,296.53/709,818.18 - Step 6: Final answer
x = 534,815.88
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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.