Finding the Fourth Proportional to 612,215.24, 915,636.98 and 545,219.72
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Solution
The fourth proportional to 612,215.24, 915,636.98 and 545,219.72 is: 815,437.62
Step by Step Solution
- Step 1: Write the proportion equation
612,215.24 : 915,636.98 = 545,219.72 : x - Step 2: Convert to fraction form
612,215.24/915,636.98 = 545,219.72/x - Step 3: Cross multiply
612,215.24x = 915,636.98 × 545,219.72 - Step 4: Simplify right side
612,215.24x = 499,223,337,857.25 - Step 5: Solve for x
x = 499,223,337,857.25/612,215.24 - Step 6: Final answer
x = 815,437.62
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.