Finding the Fourth Proportional to 385,257.80, 577,886.70 and 361,929.80
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Solution
The fourth proportional to 385,257.80, 577,886.70 and 361,929.80 is: 542,894.70
Step by Step Solution
- Step 1: Write the proportion equation
385,257.80 : 577,886.70 = 361,929.80 : x - Step 2: Convert to fraction form
385,257.80/577,886.70 = 361,929.80/x - Step 3: Cross multiply
385,257.80x = 577,886.70 × 361,929.80 - Step 4: Simplify right side
385,257.80x = 209,154,417,753.66 - Step 5: Solve for x
x = 209,154,417,753.66/385,257.80 - Step 6: Final answer
x = 542,894.70
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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.