Finding the Fourth Proportional to 539,129.40, 808,694.10 and 493,639.80
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Solution
The fourth proportional to 539,129.40, 808,694.10 and 493,639.80 is: 740,459.70
Step by Step Solution
- Step 1: Write the proportion equation
539,129.40 : 808,694.10 = 493,639.80 : x - Step 2: Convert to fraction form
539,129.40/808,694.10 = 493,639.80/x - Step 3: Cross multiply
539,129.40x = 808,694.10 × 493,639.80 - Step 4: Simplify right side
539,129.40x = 399,203,593,785.18 - Step 5: Solve for x
x = 399,203,593,785.18/539,129.40 - Step 6: Final answer
x = 740,459.70
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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.