Finding the Fourth Proportional to 1,288,085.76, 1,777,564.80 and 804,931.68
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Solution
The fourth proportional to 1,288,085.76, 1,777,564.80 and 804,931.68 is: 1,110,809.75
Step by Step Solution
- Step 1: Write the proportion equation
1,288,085.76 : 1,777,564.80 = 804,931.68 : x - Step 2: Convert to fraction form
1,288,085.76/1,777,564.80 = 804,931.68/x - Step 3: Cross multiply
1,288,085.76x = 1,777,564.80 × 804,931.68 - Step 4: Simplify right side
1,288,085.76x = 1,430,818,220,772.86 - Step 5: Solve for x
x = 1,430,818,220,772.86/1,288,085.76 - Step 6: Final answer
x = 1,110,809.75
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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.