Finding the Fourth Proportional to 921,448.91, 1,272,101.33 and 636,502.25
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Solution
The fourth proportional to 921,448.91, 1,272,101.33 and 636,502.25 is: 878,719.75
Step by Step Solution
- Step 1: Write the proportion equation
921,448.91 : 1,272,101.33 = 636,502.25 : x - Step 2: Convert to fraction form
921,448.91/1,272,101.33 = 636,502.25/x - Step 3: Cross multiply
921,448.91x = 1,272,101.33 × 636,502.25 - Step 4: Simplify right side
921,448.91x = 809,695,354,003.74 - Step 5: Solve for x
x = 809,695,354,003.74/921,448.91 - Step 6: Final answer
x = 878,719.75
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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.