Finding the Fourth Proportional to 785,428.70, 1,083,896.79 and 445,902.62
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Solution
The fourth proportional to 785,428.70, 1,083,896.79 and 445,902.62 is: 615,348.56
Step by Step Solution
- Step 1: Write the proportion equation
785,428.70 : 1,083,896.79 = 445,902.62 : x - Step 2: Convert to fraction form
785,428.70/1,083,896.79 = 445,902.62/x - Step 3: Cross multiply
785,428.70x = 1,083,896.79 × 445,902.62 - Step 4: Simplify right side
785,428.70x = 483,312,418,470.59 - Step 5: Solve for x
x = 483,312,418,470.59/785,428.70 - Step 6: Final answer
x = 615,348.56
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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.