Finding the Fourth Proportional to 778,921.80, 1,074,660.18 and 434,701.80
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Solution
The fourth proportional to 778,921.80, 1,074,660.18 and 434,701.80 is: 599,747.90
Step by Step Solution
- Step 1: Write the proportion equation
778,921.80 : 1,074,660.18 = 434,701.80 : x - Step 2: Convert to fraction form
778,921.80/1,074,660.18 = 434,701.80/x - Step 3: Cross multiply
778,921.80x = 1,074,660.18 × 434,701.80 - Step 4: Simplify right side
778,921.80x = 467,156,714,634.32 - Step 5: Solve for x
x = 467,156,714,634.32/778,921.80 - Step 6: Final answer
x = 599,747.90
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.