Finding the Fourth Proportional to 985,605.70, 1,478,408.55 and 985,605.70
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Solution
The fourth proportional to 985,605.70, 1,478,408.55 and 985,605.70 is: 1,478,408.55
Step by Step Solution
- Step 1: Write the proportion equation
985,605.70 : 1,478,408.55 = 985,605.70 : x - Step 2: Convert to fraction form
985,605.70/1,478,408.55 = 985,605.70/x - Step 3: Cross multiply
985,605.70x = 1,478,408.55 × 985,605.70 - Step 4: Simplify right side
985,605.70x = 1,457,127,893,808.74 - Step 5: Solve for x
x = 1,457,127,893,808.74/985,605.70 - Step 6: Final answer
x = 1,478,408.55
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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.