Finding the Fourth Proportional to 680,709.42, 939,346.20 and 374,779.44
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Solution
The fourth proportional to 680,709.42, 939,346.20 and 374,779.44 is: 517,177.57
Step by Step Solution
- Step 1: Write the proportion equation
680,709.42 : 939,346.20 = 374,779.44 : x - Step 2: Convert to fraction form
680,709.42/939,346.20 = 374,779.44/x - Step 3: Cross multiply
680,709.42x = 939,346.20 × 374,779.44 - Step 4: Simplify right side
680,709.42x = 352,047,642,802.13 - Step 5: Solve for x
x = 352,047,642,802.13/680,709.42 - Step 6: Final answer
x = 517,177.57
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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.