Finding the Fourth Proportional to 708,504.14, 977,686.86 and 398,453.09
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Solution
The fourth proportional to 708,504.14, 977,686.86 and 398,453.09 is: 549,837.79
Step by Step Solution
- Step 1: Write the proportion equation
708,504.14 : 977,686.86 = 398,453.09 : x - Step 2: Convert to fraction form
708,504.14/977,686.86 = 398,453.09/x - Step 3: Cross multiply
708,504.14x = 977,686.86 × 398,453.09 - Step 4: Simplify right side
708,504.14x = 389,562,350,419.40 - Step 5: Solve for x
x = 389,562,350,419.40/708,504.14 - Step 6: Final answer
x = 549,837.79
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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.