Finding the Fourth Proportional to 664,558.74, 917,079.36 and 378,072.72
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Solution
The fourth proportional to 664,558.74, 917,079.36 and 378,072.72 is: 521,733.70
Step by Step Solution
- Step 1: Write the proportion equation
664,558.74 : 917,079.36 = 378,072.72 : x - Step 2: Convert to fraction form
664,558.74/917,079.36 = 378,072.72/x - Step 3: Cross multiply
664,558.74x = 917,079.36 × 378,072.72 - Step 4: Simplify right side
664,558.74x = 346,722,688,091.06 - Step 5: Solve for x
x = 346,722,688,091.06/664,558.74 - Step 6: Final answer
x = 521,733.70
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.