Finding the Fourth Proportional to 518,612.08, 715,683.60 and 280,148.08
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Solution
The fourth proportional to 518,612.08, 715,683.60 and 280,148.08 is: 386,603.77
Step by Step Solution
- Step 1: Write the proportion equation
518,612.08 : 715,683.60 = 280,148.08 : x - Step 2: Convert to fraction form
518,612.08/715,683.60 = 280,148.08/x - Step 3: Cross multiply
518,612.08x = 715,683.60 × 280,148.08 - Step 4: Simplify right side
518,612.08x = 200,497,386,427.49 - Step 5: Solve for x
x = 200,497,386,427.49/518,612.08 - Step 6: Final answer
x = 386,603.77
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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.