Finding the Fourth Proportional to 665,425.07, 918,289.10 and 420,518.66
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Solution
The fourth proportional to 665,425.07, 918,289.10 and 420,518.66 is: 580,317.34
Step by Step Solution
- Step 1: Write the proportion equation
665,425.07 : 918,289.10 = 420,518.66 : x - Step 2: Convert to fraction form
665,425.07/918,289.10 = 420,518.66/x - Step 3: Cross multiply
665,425.07x = 918,289.10 × 420,518.66 - Step 4: Simplify right side
665,425.07x = 386,157,704,391.19 - Step 5: Solve for x
x = 386,157,704,391.19/665,425.07 - Step 6: Final answer
x = 580,317.34
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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.