Finding the Fourth Proportional to 611,701.80, 917,552.70 and 257,407.80
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Solution
The fourth proportional to 611,701.80, 917,552.70 and 257,407.80 is: 386,111.70
Step by Step Solution
- Step 1: Write the proportion equation
611,701.80 : 917,552.70 = 257,407.80 : x - Step 2: Convert to fraction form
611,701.80/917,552.70 = 257,407.80/x - Step 3: Cross multiply
611,701.80x = 917,552.70 × 257,407.80 - Step 4: Simplify right side
611,701.80x = 236,185,221,891.06 - Step 5: Solve for x
x = 236,185,221,891.06/611,701.80 - Step 6: Final answer
x = 386,111.70
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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.