Finding the Fourth Proportional to 817,828.48, 1,128,709.23 and 469,104.94
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Solution
The fourth proportional to 817,828.48, 1,128,709.23 and 469,104.94 is: 647,425.57
Step by Step Solution
- Step 1: Write the proportion equation
817,828.48 : 1,128,709.23 = 469,104.94 : x - Step 2: Convert to fraction form
817,828.48/1,128,709.23 = 469,104.94/x - Step 3: Cross multiply
817,828.48x = 1,128,709.23 × 469,104.94 - Step 4: Simplify right side
817,828.48x = 529,483,069,973.05 - Step 5: Solve for x
x = 529,483,069,973.05/817,828.48 - Step 6: Final answer
x = 647,425.57
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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.