Finding the Fourth Proportional to 920,761,290.24, 1,270,635,751.68 and 503,064,606.72
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Solution
The fourth proportional to 920,761,290.24, 1,270,635,751.68 and 503,064,606.72 is: 694,221,055.42
Step by Step Solution
- Step 1: Write the proportion equation
920,761,290.24 : 1,270,635,751.68 = 503,064,606.72 : x - Step 2: Convert to fraction form
920,761,290.24/1,270,635,751.68 = 503,064,606.72/x - Step 3: Cross multiply
920,761,290.24x = 1,270,635,751.68 × 503,064,606.72 - Step 4: Simplify right side
920,761,290.24x = 639,211,874,703,270,912 - Step 5: Solve for x
x = 639,211,874,703,270,912/920,761,290.24 - Step 6: Final answer
x = 694,221,055.42
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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.