Finding the Fourth Proportional to 448,430.76, 618,809.76 and 257,431.68
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Solution
The fourth proportional to 448,430.76, 618,809.76 and 257,431.68 is: 355,241.55
Step by Step Solution
- Step 1: Write the proportion equation
448,430.76 : 618,809.76 = 257,431.68 : x - Step 2: Convert to fraction form
448,430.76/618,809.76 = 257,431.68/x - Step 3: Cross multiply
448,430.76x = 618,809.76 × 257,431.68 - Step 4: Simplify right side
448,430.76x = 159,301,236,117.20 - Step 5: Solve for x
x = 159,301,236,117.20/448,430.76 - Step 6: Final answer
x = 355,241.55
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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.