Finding the Fourth Proportional to 781,831.12, 1,078,370.76 and 717,508.08
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Solution
The fourth proportional to 781,831.12, 1,078,370.76 and 717,508.08 is: 989,650.72
Step by Step Solution
- Step 1: Write the proportion equation
781,831.12 : 1,078,370.76 = 717,508.08 : x - Step 2: Convert to fraction form
781,831.12/1,078,370.76 = 717,508.08/x - Step 3: Cross multiply
781,831.12x = 1,078,370.76 × 717,508.08 - Step 4: Simplify right side
781,831.12x = 773,739,733,535.74 - Step 5: Solve for x
x = 773,739,733,535.74/781,831.12 - Step 6: Final answer
x = 989,650.72
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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.