Finding the Fourth Proportional to 738,742.60, 1,107,457.80 and 438,904.90
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Solution
The fourth proportional to 738,742.60, 1,107,457.80 and 438,904.90 is: 657,967.55
Step by Step Solution
- Step 1: Write the proportion equation
738,742.60 : 1,107,457.80 = 438,904.90 : x - Step 2: Convert to fraction form
738,742.60/1,107,457.80 = 438,904.90/x - Step 3: Cross multiply
738,742.60x = 1,107,457.80 × 438,904.90 - Step 4: Simplify right side
738,742.60x = 486,068,654,963.22 - Step 5: Solve for x
x = 486,068,654,963.22/738,742.60 - Step 6: Final answer
x = 657,967.55
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.