Finding the Fourth Proportional to 879,416.20, 1,319,124.30 and 574,985.80
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Solution
The fourth proportional to 879,416.20, 1,319,124.30 and 574,985.80 is: 862,478.70
Step by Step Solution
- Step 1: Write the proportion equation
879,416.20 : 1,319,124.30 = 574,985.80 : x - Step 2: Convert to fraction form
879,416.20/1,319,124.30 = 574,985.80/x - Step 3: Cross multiply
879,416.20x = 1,319,124.30 × 574,985.80 - Step 4: Simplify right side
879,416.20x = 758,477,740,934.94 - Step 5: Solve for x
x = 758,477,740,934.94/879,416.20 - Step 6: Final answer
x = 862,478.70
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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.