Finding the Fourth Proportional to 518,348.36, 715,324.25 and 288,920.41
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Solution
The fourth proportional to 518,348.36, 715,324.25 and 288,920.41 is: 398,712.12
Step by Step Solution
- Step 1: Write the proportion equation
518,348.36 : 715,324.25 = 288,920.41 : x - Step 2: Convert to fraction form
518,348.36/715,324.25 = 288,920.41/x - Step 3: Cross multiply
518,348.36x = 715,324.25 × 288,920.41 - Step 4: Simplify right side
518,348.36x = 206,671,774,526.93 - Step 5: Solve for x
x = 206,671,774,526.93/518,348.36 - Step 6: Final answer
x = 398,712.12
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1.5x scale
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.