Finding the Fourth Proportional to 747,449.37, 1,031,465.75 and 407,920.05
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Solution
The fourth proportional to 747,449.37, 1,031,465.75 and 407,920.05 is: 562,921.82
Step by Step Solution
- Step 1: Write the proportion equation
747,449.37 : 1,031,465.75 = 407,920.05 : x - Step 2: Convert to fraction form
747,449.37/1,031,465.75 = 407,920.05/x - Step 3: Cross multiply
747,449.37x = 1,031,465.75 × 407,920.05 - Step 4: Simplify right side
747,449.37x = 420,755,558,273.69 - Step 5: Solve for x
x = 420,755,558,273.69/747,449.37 - Step 6: Final answer
x = 562,921.82
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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.