Finding the Fourth Proportional to 853,633,076.32, 1,177,652,923.68 and 571,466,420.56
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Solution
The fourth proportional to 853,633,076.32, 1,177,652,923.68 and 571,466,420.56 is: 788,382,174.53
Step by Step Solution
- Step 1: Write the proportion equation
853,633,076.32 : 1,177,652,923.68 = 571,466,420.56 : x - Step 2: Convert to fraction form
853,633,076.32/1,177,652,923.68 = 571,466,420.56/x - Step 3: Cross multiply
853,633,076.32x = 1,177,652,923.68 × 571,466,420.56 - Step 4: Simplify right side
853,633,076.32x = 672,989,100,957,428,480 - Step 5: Solve for x
x = 672,989,100,957,428,480/853,633,076.32 - Step 6: Final answer
x = 788,382,174.53
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Double scale
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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.