Finding the Fourth Proportional to 487,312.25, 672,220.91 and 283,340.63
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Solution
The fourth proportional to 487,312.25, 672,220.91 and 283,340.63 is: 390,853.08
Step by Step Solution
- Step 1: Write the proportion equation
487,312.25 : 672,220.91 = 283,340.63 : x - Step 2: Convert to fraction form
487,312.25/672,220.91 = 283,340.63/x - Step 3: Cross multiply
487,312.25x = 672,220.91 × 283,340.63 - Step 4: Simplify right side
487,312.25x = 190,467,491,360.77 - Step 5: Solve for x
x = 190,467,491,360.77/487,312.25 - Step 6: Final answer
x = 390,853.08
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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.