Finding the Fourth Proportional to 479,578,974.12, 661,835,032.20 and 293,904,132.12
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Solution
The fourth proportional to 479,578,974.12, 661,835,032.20 and 293,904,132.12 is: 405,597,537.09
Step by Step Solution
- Step 1: Write the proportion equation
479,578,974.12 : 661,835,032.20 = 293,904,132.12 : x - Step 2: Convert to fraction form
479,578,974.12/661,835,032.20 = 293,904,132.12/x - Step 3: Cross multiply
479,578,974.12x = 661,835,032.20 × 293,904,132.12 - Step 4: Simplify right side
479,578,974.12x = 194,516,050,745,353,280 - Step 5: Solve for x
x = 194,516,050,745,353,280/479,578,974.12 - Step 6: Final answer
x = 405,597,537.09
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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.