Finding the Fourth Proportional to 817,981.92, 1,128,734.64 and 478,383.84
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Solution
The fourth proportional to 817,981.92, 1,128,734.64 and 478,383.84 is: 660,122.67
Step by Step Solution
- Step 1: Write the proportion equation
817,981.92 : 1,128,734.64 = 478,383.84 : x - Step 2: Convert to fraction form
817,981.92/1,128,734.64 = 478,383.84/x - Step 3: Cross multiply
817,981.92x = 1,128,734.64 × 478,383.84 - Step 4: Simplify right side
817,981.92x = 539,968,411,424.22 - Step 5: Solve for x
x = 539,968,411,424.22/817,981.92 - Step 6: Final answer
x = 660,122.67
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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.