Finding the Fourth Proportional to 1,425,630.70, 1,967,372.85 and 781,037.02
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Solution
The fourth proportional to 1,425,630.70, 1,967,372.85 and 781,037.02 is: 1,077,832.45
Step by Step Solution
- Step 1: Write the proportion equation
1,425,630.70 : 1,967,372.85 = 781,037.02 : x - Step 2: Convert to fraction form
1,425,630.70/1,967,372.85 = 781,037.02/x - Step 3: Cross multiply
1,425,630.70x = 1,967,372.85 × 781,037.02 - Step 4: Simplify right side
1,425,630.70x = 1,536,591,027,992.91 - Step 5: Solve for x
x = 1,536,591,027,992.91/1,425,630.70 - Step 6: Final answer
x = 1,077,832.45
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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.