Finding the Fourth Proportional to 409,207.40, 613,811.10 and 346,221.80
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Solution
The fourth proportional to 409,207.40, 613,811.10 and 346,221.80 is: 519,332.70
Step by Step Solution
- Step 1: Write the proportion equation
409,207.40 : 613,811.10 = 346,221.80 : x - Step 2: Convert to fraction form
409,207.40/613,811.10 = 346,221.80/x - Step 3: Cross multiply
409,207.40x = 613,811.10 × 346,221.80 - Step 4: Simplify right side
409,207.40x = 212,514,783,901.98 - Step 5: Solve for x
x = 212,514,783,901.98/409,207.40 - Step 6: Final answer
x = 519,332.70
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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.