Finding the Fourth Proportional to 817,574.17, 1,128,243.56 and 454,991.91
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Solution
The fourth proportional to 817,574.17, 1,128,243.56 and 454,991.91 is: 627,883.94
Step by Step Solution
- Step 1: Write the proportion equation
817,574.17 : 1,128,243.56 = 454,991.91 : x - Step 2: Convert to fraction form
817,574.17/1,128,243.56 = 454,991.91/x - Step 3: Cross multiply
817,574.17x = 1,128,243.56 × 454,991.91 - Step 4: Simplify right side
817,574.17x = 513,341,686,668.38 - Step 5: Solve for x
x = 513,341,686,668.38/817,574.17 - Step 6: Final answer
x = 627,883.94
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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.