Finding the Fourth Proportional to 685,490.24, 945,683.42 and 413,403.42
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Solution
The fourth proportional to 685,490.24, 945,683.42 and 413,403.42 is: 570,319.95
Step by Step Solution
- Step 1: Write the proportion equation
685,490.24 : 945,683.42 = 413,403.42 : x - Step 2: Convert to fraction form
685,490.24/945,683.42 = 413,403.42/x - Step 3: Cross multiply
685,490.24x = 945,683.42 × 413,403.42 - Step 4: Simplify right side
685,490.24x = 390,948,760,065.30 - Step 5: Solve for x
x = 390,948,760,065.30/685,490.24 - Step 6: Final answer
x = 570,319.95
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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.