Finding the Fourth Proportional to 829,804,258.80, 1,244,706,388.20 and 782,187,145.20
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Solution
The fourth proportional to 829,804,258.80, 1,244,706,388.20 and 782,187,145.20 is: 1,173,280,717.80
Step by Step Solution
- Step 1: Write the proportion equation
829,804,258.80 : 1,244,706,388.20 = 782,187,145.20 : x - Step 2: Convert to fraction form
829,804,258.80/1,244,706,388.20 = 782,187,145.20/x - Step 3: Cross multiply
829,804,258.80x = 1,244,706,388.20 × 782,187,145.20 - Step 4: Simplify right side
829,804,258.80x = 973,593,336,398,361,088 - Step 5: Solve for x
x = 973,593,336,398,361,088/829,804,258.80 - Step 6: Final answer
x = 1,173,280,717.80
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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.