Finding the Fourth Proportional to 663,678,674.24, 915,739,840.68 and 381,366,566.24
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Solution
The fourth proportional to 663,678,674.24, 915,739,840.68 and 381,366,566.24 is: 526,207,293.02
Step by Step Solution
- Step 1: Write the proportion equation
663,678,674.24 : 915,739,840.68 = 381,366,566.24 : x - Step 2: Convert to fraction form
663,678,674.24/915,739,840.68 = 381,366,566.24/x - Step 3: Cross multiply
663,678,674.24x = 915,739,840.68 × 381,366,566.24 - Step 4: Simplify right side
663,678,674.24x = 349,232,558,609,296,256 - Step 5: Solve for x
x = 349,232,558,609,296,256/663,678,674.24 - Step 6: Final answer
x = 526,207,293.02
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Double scale
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1.5x scale
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.