Finding the Fourth Proportional to 1,128,385.74, 1,692,589.55 and 286,937.49
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Solution
The fourth proportional to 1,128,385.74, 1,692,589.55 and 286,937.49 is: 430,409.02
Step by Step Solution
- Step 1: Write the proportion equation
1,128,385.74 : 1,692,589.55 = 286,937.49 : x - Step 2: Convert to fraction form
1,128,385.74/1,692,589.55 = 286,937.49/x - Step 3: Cross multiply
1,128,385.74x = 1,692,589.55 × 286,937.49 - Step 4: Simplify right side
1,128,385.74x = 485,667,395,642.54 - Step 5: Solve for x
x = 485,667,395,642.54/1,128,385.74 - Step 6: Final answer
x = 430,409.02
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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.