Finding the Fourth Proportional to 712,964.70, 1,069,447.05 and 292,542.30
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Solution
The fourth proportional to 712,964.70, 1,069,447.05 and 292,542.30 is: 438,813.45
Step by Step Solution
- Step 1: Write the proportion equation
712,964.70 : 1,069,447.05 = 292,542.30 : x - Step 2: Convert to fraction form
712,964.70/1,069,447.05 = 292,542.30/x - Step 3: Cross multiply
712,964.70x = 1,069,447.05 × 292,542.30 - Step 4: Simplify right side
712,964.70x = 312,858,499,735.22 - Step 5: Solve for x
x = 312,858,499,735.22/712,964.70 - Step 6: Final answer
x = 438,813.45
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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.