Finding the Fourth Proportional to 611,399.70, 917,099.55 and 471,431.70
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Solution
The fourth proportional to 611,399.70, 917,099.55 and 471,431.70 is: 707,147.55
Step by Step Solution
- Step 1: Write the proportion equation
611,399.70 : 917,099.55 = 471,431.70 : x - Step 2: Convert to fraction form
611,399.70/917,099.55 = 471,431.70/x - Step 3: Cross multiply
611,399.70x = 917,099.55 × 471,431.70 - Step 4: Simplify right side
611,399.70x = 432,349,799,925.74 - Step 5: Solve for x
x = 432,349,799,925.74/611,399.70 - Step 6: Final answer
x = 707,147.55
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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.