Finding the Fourth Proportional to 518,617.08, 715,690.50 and 280,153.08
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Solution
The fourth proportional to 518,617.08, 715,690.50 and 280,153.08 is: 386,610.67
Step by Step Solution
- Step 1: Write the proportion equation
518,617.08 : 715,690.50 = 280,153.08 : x - Step 2: Convert to fraction form
518,617.08/715,690.50 = 280,153.08/x - Step 3: Cross multiply
518,617.08x = 715,690.50 × 280,153.08 - Step 4: Simplify right side
518,617.08x = 200,502,897,901.74 - Step 5: Solve for x
x = 200,502,897,901.74/518,617.08 - Step 6: Final answer
x = 386,610.67
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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.