Finding the Fourth Proportional to 742,543.36, 1,024,465.92 and 420,221.44
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Solution
The fourth proportional to 742,543.36, 1,024,465.92 and 420,221.44 is: 579,767.55
Step by Step Solution
- Step 1: Write the proportion equation
742,543.36 : 1,024,465.92 = 420,221.44 : x - Step 2: Convert to fraction form
742,543.36/1,024,465.92 = 420,221.44/x - Step 3: Cross multiply
742,543.36x = 1,024,465.92 × 420,221.44 - Step 4: Simplify right side
742,543.36x = 430,502,544,133.33 - Step 5: Solve for x
x = 430,502,544,133.33/742,543.36 - Step 6: Final answer
x = 579,767.55
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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.