Finding the Fourth Proportional to 785,986.38, 1,179,209.21 and 253,495.62
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Solution
The fourth proportional to 785,986.38, 1,179,209.21 and 253,495.62 is: 380,317.49
Step by Step Solution
- Step 1: Write the proportion equation
785,986.38 : 1,179,209.21 = 253,495.62 : x - Step 2: Convert to fraction form
785,986.38/1,179,209.21 = 253,495.62/x - Step 3: Cross multiply
785,986.38x = 1,179,209.21 × 253,495.62 - Step 4: Simplify right side
785,986.38x = 298,924,368,531.18 - Step 5: Solve for x
x = 298,924,368,531.18/785,986.38 - Step 6: Final answer
x = 380,317.49
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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.