Finding the Fourth Proportional to 478,831.40, 716,864.70 and 292,207.40
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Solution
The fourth proportional to 478,831.40, 716,864.70 and 292,207.40 is: 437,467.49
Step by Step Solution
- Step 1: Write the proportion equation
478,831.40 : 716,864.70 = 292,207.40 : x - Step 2: Convert to fraction form
478,831.40/716,864.70 = 292,207.40/x - Step 3: Cross multiply
478,831.40x = 716,864.70 × 292,207.40 - Step 4: Simplify right side
478,831.40x = 209,473,170,138.78 - Step 5: Solve for x
x = 209,473,170,138.78/478,831.40 - Step 6: Final answer
x = 437,467.49
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.