Finding the Fourth Proportional to 528,643.13, 729,195.59 and 313,630.97
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Solution
The fourth proportional to 528,643.13, 729,195.59 and 313,630.97 is: 432,613.81
Step by Step Solution
- Step 1: Write the proportion equation
528,643.13 : 729,195.59 = 313,630.97 : x - Step 2: Convert to fraction form
528,643.13/729,195.59 = 313,630.97/x - Step 3: Cross multiply
528,643.13x = 729,195.59 × 313,630.97 - Step 4: Simplify right side
528,643.13x = 228,698,316,565.44 - Step 5: Solve for x
x = 228,698,316,565.44/528,643.13 - Step 6: Final answer
x = 432,613.81
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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.