Finding the Fourth Proportional to 930,128,718.80, 1,395,193,078.20 and 844,035,276.80
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Solution
The fourth proportional to 930,128,718.80, 1,395,193,078.20 and 844,035,276.80 is: 1,266,052,915.20
Step by Step Solution
- Step 1: Write the proportion equation
930,128,718.80 : 1,395,193,078.20 = 844,035,276.80 : x - Step 2: Convert to fraction form
930,128,718.80/1,395,193,078.20 = 844,035,276.80/x - Step 3: Cross multiply
930,128,718.80x = 1,395,193,078.20 × 844,035,276.80 - Step 4: Simplify right side
930,128,718.80x = 1,177,592,175,947,981,056 - Step 5: Solve for x
x = 1,177,592,175,947,981,056/930,128,718.80 - Step 6: Final answer
x = 1,266,052,915.20
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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.