Finding the Fourth Proportional to 1,279,128.99, 1,918,518.51 and 380,709.39
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Solution
The fourth proportional to 1,279,128.99, 1,918,518.51 and 380,709.39 is: 571,012.01
Step by Step Solution
- Step 1: Write the proportion equation
1,279,128.99 : 1,918,518.51 = 380,709.39 : x - Step 2: Convert to fraction form
1,279,128.99/1,918,518.51 = 380,709.39/x - Step 3: Cross multiply
1,279,128.99x = 1,918,518.51 × 380,709.39 - Step 4: Simplify right side
1,279,128.99x = 730,398,011,645.81 - Step 5: Solve for x
x = 730,398,011,645.81/1,279,128.99 - Step 6: Final answer
x = 571,012.01
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.