Finding the Fourth Proportional to 611,659.80, 917,489.70 and 257,365.80
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Solution
The fourth proportional to 611,659.80, 917,489.70 and 257,365.80 is: 386,048.70
Step by Step Solution
- Step 1: Write the proportion equation
611,659.80 : 917,489.70 = 257,365.80 : x - Step 2: Convert to fraction form
611,659.80/917,489.70 = 257,365.80/x - Step 3: Cross multiply
611,659.80x = 917,489.70 × 257,365.80 - Step 4: Simplify right side
611,659.80x = 236,130,470,632.26 - Step 5: Solve for x
x = 236,130,470,632.26/611,659.80 - Step 6: Final answer
x = 386,048.70
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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.