Finding the Fourth Proportional to 1,670,781.64, 2,305,672.88 and 906,835.20
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Solution
The fourth proportional to 1,670,781.64, 2,305,672.88 and 906,835.20 is: 1,251,429.44
Step by Step Solution
- Step 1: Write the proportion equation
1,670,781.64 : 2,305,672.88 = 906,835.20 : x - Step 2: Convert to fraction form
1,670,781.64/2,305,672.88 = 906,835.20/x - Step 3: Cross multiply
1,670,781.64x = 2,305,672.88 × 906,835.20 - Step 4: Simplify right side
1,670,781.64x = 2,090,865,327,269.38 - Step 5: Solve for x
x = 2,090,865,327,269.38/1,670,781.64 - Step 6: Final answer
x = 1,251,429.44
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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.