Finding the Fourth Proportional to 783,421.98, 1,081,453.08 and 529,117.62
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Solution
The fourth proportional to 783,421.98, 1,081,453.08 and 529,117.62 is: 730,405.70
Step by Step Solution
- Step 1: Write the proportion equation
783,421.98 : 1,081,453.08 = 529,117.62 : x - Step 2: Convert to fraction form
783,421.98/1,081,453.08 = 529,117.62/x - Step 3: Cross multiply
783,421.98x = 1,081,453.08 × 529,117.62 - Step 4: Simplify right side
783,421.98x = 572,215,879,831.27 - Step 5: Solve for x
x = 572,215,879,831.27/783,421.98 - Step 6: Final answer
x = 730,405.70
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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.