Finding the Fourth Proportional to 907,558,718.40, 1,361,338,077.60 and 887,403,326.40
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Solution
The fourth proportional to 907,558,718.40, 1,361,338,077.60 and 887,403,326.40 is: 1,331,104,989.60
Step by Step Solution
- Step 1: Write the proportion equation
907,558,718.40 : 1,361,338,077.60 = 887,403,326.40 : x - Step 2: Convert to fraction form
907,558,718.40/1,361,338,077.60 = 887,403,326.40/x - Step 3: Cross multiply
907,558,718.40x = 1,361,338,077.60 × 887,403,326.40 - Step 4: Simplify right side
907,558,718.40x = 1,208,055,938,417,221,120 - Step 5: Solve for x
x = 1,208,055,938,417,221,120/907,558,718.40 - Step 6: Final answer
x = 1,331,104,989.60
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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.