Finding the Fourth Proportional to 680,971.96, 939,516.37 and 439,415.08
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Solution
The fourth proportional to 680,971.96, 939,516.37 and 439,415.08 is: 606,247.66
Step by Step Solution
- Step 1: Write the proportion equation
680,971.96 : 939,516.37 = 439,415.08 : x - Step 2: Convert to fraction form
680,971.96/939,516.37 = 439,415.08/x - Step 3: Cross multiply
680,971.96x = 939,516.37 × 439,415.08 - Step 4: Simplify right side
680,971.96x = 412,837,657,437.53 - Step 5: Solve for x
x = 412,837,657,437.53/680,971.96 - Step 6: Final answer
x = 606,247.66
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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.