Finding the Fourth Proportional to 611,779.80, 917,669.70 and 257,485.80
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Solution
The fourth proportional to 611,779.80, 917,669.70 and 257,485.80 is: 386,228.70
Step by Step Solution
- Step 1: Write the proportion equation
611,779.80 : 917,669.70 = 257,485.80 : x - Step 2: Convert to fraction form
611,779.80/917,669.70 = 257,485.80/x - Step 3: Cross multiply
611,779.80x = 917,669.70 × 257,485.80 - Step 4: Simplify right side
611,779.80x = 236,286,916,840.26 - Step 5: Solve for x
x = 236,286,916,840.26/611,779.80 - Step 6: Final answer
x = 386,228.70
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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.