Finding the Fourth Proportional to 782,408, 1,079,749.58 and 438,258.68
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Solution
The fourth proportional to 782,408, 1,079,749.58 and 438,258.68 is: 604,811.84
Step by Step Solution
- Step 1: Write the proportion equation
782,408 : 1,079,749.58 = 438,258.68 : x - Step 2: Convert to fraction form
782,408/1,079,749.58 = 438,258.68/x - Step 3: Cross multiply
782,408x = 1,079,749.58 × 438,258.68 - Step 4: Simplify right side
782,408x = 473,209,625,661.35 - Step 5: Solve for x
x = 473,209,625,661.35/782,408 - Step 6: Final answer
x = 604,811.84
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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.