Finding the Fourth Proportional to 486,935.40, 730,403.10 and 318,973.80
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Solution
The fourth proportional to 486,935.40, 730,403.10 and 318,973.80 is: 478,460.70
Step by Step Solution
- Step 1: Write the proportion equation
486,935.40 : 730,403.10 = 318,973.80 : x - Step 2: Convert to fraction form
486,935.40/730,403.10 = 318,973.80/x - Step 3: Cross multiply
486,935.40x = 730,403.10 × 318,973.80 - Step 4: Simplify right side
486,935.40x = 232,979,452,338.78 - Step 5: Solve for x
x = 232,979,452,338.78/486,935.40 - Step 6: Final answer
x = 478,460.70
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Similar ratio
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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.