Finding the Fourth Proportional to 782,235.69, 1,079,395.98 and 438,023.76
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Solution
The fourth proportional to 782,235.69, 1,079,395.98 and 438,023.76 is: 604,422.80
Step by Step Solution
- Step 1: Write the proportion equation
782,235.69 : 1,079,395.98 = 438,023.76 : x - Step 2: Convert to fraction form
782,235.69/1,079,395.98 = 438,023.76/x - Step 3: Cross multiply
782,235.69x = 1,079,395.98 × 438,023.76 - Step 4: Simplify right side
782,235.69x = 472,801,085,688.49 - Step 5: Solve for x
x = 472,801,085,688.49/782,235.69 - Step 6: Final answer
x = 604,422.80
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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.