Finding the Fourth Proportional to 687,654.63, 1,024,391.95 and 666,761.49
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Solution
The fourth proportional to 687,654.63, 1,024,391.95 and 666,761.49 is: 993,267.65
Step by Step Solution
- Step 1: Write the proportion equation
687,654.63 : 1,024,391.95 = 666,761.49 : x - Step 2: Convert to fraction form
687,654.63/1,024,391.95 = 666,761.49/x - Step 3: Cross multiply
687,654.63x = 1,024,391.95 × 666,761.49 - Step 4: Simplify right side
687,654.63x = 683,025,101,259.10 - Step 5: Solve for x
x = 683,025,101,259.10/687,654.63 - Step 6: Final answer
x = 993,267.65
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.