Finding the Fourth Proportional to 664,971.96, 917,683.95 and 393,272.76
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Solution
The fourth proportional to 664,971.96, 917,683.95 and 393,272.76 is: 542,729.80
Step by Step Solution
- Step 1: Write the proportion equation
664,971.96 : 917,683.95 = 393,272.76 : x - Step 2: Convert to fraction form
664,971.96/917,683.95 = 393,272.76/x - Step 3: Cross multiply
664,971.96x = 917,683.95 × 393,272.76 - Step 4: Simplify right side
664,971.96x = 360,900,099,824.20 - Step 5: Solve for x
x = 360,900,099,824.20/664,971.96 - Step 6: Final answer
x = 542,729.80
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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.