Finding the Fourth Proportional to 1,112,292,334.80, 1,668,438,502.20 and 646,750,018.80
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Solution
The fourth proportional to 1,112,292,334.80, 1,668,438,502.20 and 646,750,018.80 is: 970,125,028.20
Step by Step Solution
- Step 1: Write the proportion equation
1,112,292,334.80 : 1,668,438,502.20 = 646,750,018.80 : x - Step 2: Convert to fraction form
1,112,292,334.80/1,668,438,502.20 = 646,750,018.80/x - Step 3: Cross multiply
1,112,292,334.80x = 1,668,438,502.20 × 646,750,018.80 - Step 4: Simplify right side
1,112,292,334.80x = 1,079,062,632,664,493,824 - Step 5: Solve for x
x = 1,079,062,632,664,493,824/1,112,292,334.80 - Step 6: Final answer
x = 970,125,028.20
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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.