Finding the Fourth Proportional to 1,434,320.90, 1,979,368.74 and 861,370.64
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Solution
The fourth proportional to 1,434,320.90, 1,979,368.74 and 861,370.64 is: 1,188,695.02
Step by Step Solution
- Step 1: Write the proportion equation
1,434,320.90 : 1,979,368.74 = 861,370.64 : x - Step 2: Convert to fraction form
1,434,320.90/1,979,368.74 = 861,370.64/x - Step 3: Cross multiply
1,434,320.90x = 1,979,368.74 × 861,370.64 - Step 4: Simplify right side
1,434,320.90x = 1,704,970,108,472.95 - Step 5: Solve for x
x = 1,704,970,108,472.95/1,434,320.90 - Step 6: Final answer
x = 1,188,695.02
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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.