Finding the Fourth Proportional to 879,493.70, 1,319,240.55 and 407,101.70
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Solution
The fourth proportional to 879,493.70, 1,319,240.55 and 407,101.70 is: 610,652.55
Step by Step Solution
- Step 1: Write the proportion equation
879,493.70 : 1,319,240.55 = 407,101.70 : x - Step 2: Convert to fraction form
879,493.70/1,319,240.55 = 407,101.70/x - Step 3: Cross multiply
879,493.70x = 1,319,240.55 × 407,101.70 - Step 4: Simplify right side
879,493.70x = 537,065,070,613.94 - Step 5: Solve for x
x = 537,065,070,613.94/879,493.70 - Step 6: Final answer
x = 610,652.55
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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.