Finding the Fourth Proportional to 513,142.08, 708,123.84 and 286,808.64
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Solution
The fourth proportional to 513,142.08, 708,123.84 and 286,808.64 is: 395,789.09
Step by Step Solution
- Step 1: Write the proportion equation
513,142.08 : 708,123.84 = 286,808.64 : x - Step 2: Convert to fraction form
513,142.08/708,123.84 = 286,808.64/x - Step 3: Cross multiply
513,142.08x = 708,123.84 × 286,808.64 - Step 4: Simplify right side
513,142.08x = 203,096,035,501.98 - Step 5: Solve for x
x = 203,096,035,501.98/513,142.08 - Step 6: Final answer
x = 395,789.09
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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.