Finding the Fourth Proportional to 1,203,305.60, 1,660,351.20 and 686,823.68
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Solution
The fourth proportional to 1,203,305.60, 1,660,351.20 and 686,823.68 is: 947,696.51
Step by Step Solution
- Step 1: Write the proportion equation
1,203,305.60 : 1,660,351.20 = 686,823.68 : x - Step 2: Convert to fraction form
1,203,305.60/1,660,351.20 = 686,823.68/x - Step 3: Cross multiply
1,203,305.60x = 1,660,351.20 × 686,823.68 - Step 4: Simplify right side
1,203,305.60x = 1,140,368,521,276.42 - Step 5: Solve for x
x = 1,140,368,521,276.42/1,203,305.60 - Step 6: Final answer
x = 947,696.51
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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.