Finding the Fourth Proportional to 900,408.29, 1,242,517.05 and 492,430.73
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Solution
The fourth proportional to 900,408.29, 1,242,517.05 and 492,430.73 is: 679,529.03
Step by Step Solution
- Step 1: Write the proportion equation
900,408.29 : 1,242,517.05 = 492,430.73 : x - Step 2: Convert to fraction form
900,408.29/1,242,517.05 = 492,430.73/x - Step 3: Cross multiply
900,408.29x = 1,242,517.05 × 492,430.73 - Step 4: Simplify right side
900,408.29x = 611,853,571,756.36 - Step 5: Solve for x
x = 611,853,571,756.36/900,408.29 - Step 6: Final answer
x = 679,529.03
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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.