Finding the Fourth Proportional to 749,418.80, 1,121,795.40 and 432,935.60
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Solution
The fourth proportional to 749,418.80, 1,121,795.40 and 432,935.60 is: 648,055.75
Step by Step Solution
- Step 1: Write the proportion equation
749,418.80 : 1,121,795.40 = 432,935.60 : x - Step 2: Convert to fraction form
749,418.80/1,121,795.40 = 432,935.60/x - Step 3: Cross multiply
749,418.80x = 1,121,795.40 × 432,935.60 - Step 4: Simplify right side
749,418.80x = 485,665,164,576.24 - Step 5: Solve for x
x = 485,665,164,576.24/749,418.80 - Step 6: Final answer
x = 648,055.75
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1.5x scale
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.