Finding the Fourth Proportional to 644,220.56, 888,959.40 and 376,104.08
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Solution
The fourth proportional to 644,220.56, 888,959.40 and 376,104.08 is: 518,985.70
Step by Step Solution
- Step 1: Write the proportion equation
644,220.56 : 888,959.40 = 376,104.08 : x - Step 2: Convert to fraction form
644,220.56/888,959.40 = 376,104.08/x - Step 3: Cross multiply
644,220.56x = 888,959.40 × 376,104.08 - Step 4: Simplify right side
644,220.56x = 334,341,257,294.35 - Step 5: Solve for x
x = 334,341,257,294.35/644,220.56 - Step 6: Final answer
x = 518,985.70
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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.