Finding the Fourth Proportional to 1,128,386.74, 1,692,591.05 and 286,938.49
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Solution
The fourth proportional to 1,128,386.74, 1,692,591.05 and 286,938.49 is: 430,410.52
Step by Step Solution
- Step 1: Write the proportion equation
1,128,386.74 : 1,692,591.05 = 286,938.49 : x - Step 2: Convert to fraction form
1,128,386.74/1,692,591.05 = 286,938.49/x - Step 3: Cross multiply
1,128,386.74x = 1,692,591.05 × 286,938.49 - Step 4: Simplify right side
1,128,386.74x = 485,669,520,074.52 - Step 5: Solve for x
x = 485,669,520,074.52/1,128,386.74 - Step 6: Final answer
x = 430,410.52
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.