Finding the Fourth Proportional to 817,445.40, 1,128,071.25 and 454,903.98
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Solution
The fourth proportional to 817,445.40, 1,128,071.25 and 454,903.98 is: 627,765.60
Step by Step Solution
- Step 1: Write the proportion equation
817,445.40 : 1,128,071.25 = 454,903.98 : x - Step 2: Convert to fraction form
817,445.40/1,128,071.25 = 454,903.98/x - Step 3: Cross multiply
817,445.40x = 1,128,071.25 × 454,903.98 - Step 4: Simplify right side
817,445.40x = 513,164,101,348.58 - Step 5: Solve for x
x = 513,164,101,348.58/817,445.40 - Step 6: Final answer
x = 627,765.60
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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.