Finding the Fourth Proportional to 403,207.80, 604,811.70 and 285,109.80
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Solution
The fourth proportional to 403,207.80, 604,811.70 and 285,109.80 is: 427,664.70
Step by Step Solution
- Step 1: Write the proportion equation
403,207.80 : 604,811.70 = 285,109.80 : x - Step 2: Convert to fraction form
403,207.80/604,811.70 = 285,109.80/x - Step 3: Cross multiply
403,207.80x = 604,811.70 × 285,109.80 - Step 4: Simplify right side
403,207.80x = 172,437,742,824.66 - Step 5: Solve for x
x = 172,437,742,824.66/403,207.80 - Step 6: Final answer
x = 427,664.70
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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.