Finding the Fourth Proportional to 3,012,123.09, 4,518,184.65 and 768,261.09
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Solution
The fourth proportional to 3,012,123.09, 4,518,184.65 and 768,261.09 is: 1,152,391.64
Step by Step Solution
- Step 1: Write the proportion equation
3,012,123.09 : 4,518,184.65 = 768,261.09 : x - Step 2: Convert to fraction form
3,012,123.09/4,518,184.65 = 768,261.09/x - Step 3: Cross multiply
3,012,123.09x = 4,518,184.65 × 768,261.09 - Step 4: Simplify right side
3,012,123.09x = 3,471,145,464,030.27 - Step 5: Solve for x
x = 3,471,145,464,030.27/3,012,123.09 - Step 6: Final answer
x = 1,152,391.64
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Double scale
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Similar ratio
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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.