Finding the Fourth Proportional to 1,255,986,955.71, 1,733,230,319.90 and 691,466,201.51
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Solution
The fourth proportional to 1,255,986,955.71, 1,733,230,319.90 and 691,466,201.51 is: 954,205,917.65
Step by Step Solution
- Step 1: Write the proportion equation
1,255,986,955.71 : 1,733,230,319.90 = 691,466,201.51 : x - Step 2: Convert to fraction form
1,255,986,955.71/1,733,230,319.90 = 691,466,201.51/x - Step 3: Cross multiply
1,255,986,955.71x = 1,733,230,319.90 × 691,466,201.51 - Step 4: Simplify right side
1,255,986,955.71x = 1,198,470,185,631,091,712 - Step 5: Solve for x
x = 1,198,470,185,631,091,712/1,255,986,955.71 - Step 6: Final answer
x = 954,205,917.65
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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.