Finding the Fourth Proportional to 515,671.77, 711,613.38 and 286,228.41
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Solution
The fourth proportional to 515,671.77, 711,613.38 and 286,228.41 is: 394,987.62
Step by Step Solution
- Step 1: Write the proportion equation
515,671.77 : 711,613.38 = 286,228.41 : x - Step 2: Convert to fraction form
515,671.77/711,613.38 = 286,228.41/x - Step 3: Cross multiply
515,671.77x = 711,613.38 × 286,228.41 - Step 4: Simplify right side
515,671.77x = 203,683,966,292.13 - Step 5: Solve for x
x = 203,683,966,292.13/515,671.77 - Step 6: Final answer
x = 394,987.62
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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.