Finding the Fourth Proportional to 644,370.92, 889,207.14 and 357,909.28
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Solution
The fourth proportional to 644,370.92, 889,207.14 and 357,909.28 is: 493,901.07
Step by Step Solution
- Step 1: Write the proportion equation
644,370.92 : 889,207.14 = 357,909.28 : x - Step 2: Convert to fraction form
644,370.92/889,207.14 = 357,909.28/x - Step 3: Cross multiply
644,370.92x = 889,207.14 × 357,909.28 - Step 4: Simplify right side
644,370.92x = 318,255,487,248.26 - Step 5: Solve for x
x = 318,255,487,248.26/644,370.92 - Step 6: Final answer
x = 493,901.07
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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.