Finding the Fourth Proportional to 528,526,767.69, 729,202,389.98 and 305,427,171.69
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Solution
The fourth proportional to 528,526,767.69, 729,202,389.98 and 305,427,171.69 is: 421,394,406.44
Step by Step Solution
- Step 1: Write the proportion equation
528,526,767.69 : 729,202,389.98 = 305,427,171.69 : x - Step 2: Convert to fraction form
528,526,767.69/729,202,389.98 = 305,427,171.69/x - Step 3: Cross multiply
528,526,767.69x = 729,202,389.98 × 305,427,171.69 - Step 4: Simplify right side
528,526,767.69x = 222,718,223,559,652,672 - Step 5: Solve for x
x = 222,718,223,559,652,672/528,526,767.69 - Step 6: Final answer
x = 421,394,406.44
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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.