Finding the Fourth Proportional to 487,294.74, 672,432.60 and 283,331.19
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Solution
The fourth proportional to 487,294.74, 672,432.60 and 283,331.19 is: 390,977.19
Step by Step Solution
- Step 1: Write the proportion equation
487,294.74 : 672,432.60 = 283,331.19 : x - Step 2: Convert to fraction form
487,294.74/672,432.60 = 283,331.19/x - Step 3: Cross multiply
487,294.74x = 672,432.60 × 283,331.19 - Step 4: Simplify right side
487,294.74x = 190,521,128,752.79 - Step 5: Solve for x
x = 190,521,128,752.79/487,294.74 - Step 6: Final answer
x = 390,977.19
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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.