Finding the Fourth Proportional to 611,872.70, 917,809.05 and 471,904.70
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Solution
The fourth proportional to 611,872.70, 917,809.05 and 471,904.70 is: 707,857.05
Step by Step Solution
- Step 1: Write the proportion equation
611,872.70 : 917,809.05 = 471,904.70 : x - Step 2: Convert to fraction form
611,872.70/917,809.05 = 471,904.70/x - Step 3: Cross multiply
611,872.70x = 917,809.05 × 471,904.70 - Step 4: Simplify right side
611,872.70x = 433,118,404,397.54 - Step 5: Solve for x
x = 433,118,404,397.54/611,872.70 - Step 6: Final answer
x = 707,857.05
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1.5x scale
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.