Finding the Fourth Proportional to 687,779.70, 1,031,669.55 and 477,827.70
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Solution
The fourth proportional to 687,779.70, 1,031,669.55 and 477,827.70 is: 716,741.55
Step by Step Solution
- Step 1: Write the proportion equation
687,779.70 : 1,031,669.55 = 477,827.70 : x - Step 2: Convert to fraction form
687,779.70/1,031,669.55 = 477,827.70/x - Step 3: Cross multiply
687,779.70x = 1,031,669.55 × 477,827.70 - Step 4: Simplify right side
687,779.70x = 492,960,288,236.54 - Step 5: Solve for x
x = 492,960,288,236.54/687,779.70 - Step 6: Final answer
x = 716,741.55
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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.