Finding the Fourth Proportional to 819,129.57, 1,130,404.05 and 456,576.42
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Solution
The fourth proportional to 819,129.57, 1,130,404.05 and 456,576.42 is: 630,078.38
Step by Step Solution
- Step 1: Write the proportion equation
819,129.57 : 1,130,404.05 = 456,576.42 : x - Step 2: Convert to fraction form
819,129.57/1,130,404.05 = 456,576.42/x - Step 3: Cross multiply
819,129.57x = 1,130,404.05 × 456,576.42 - Step 4: Simplify right side
819,129.57x = 516,115,834,302.50 - Step 5: Solve for x
x = 516,115,834,302.50/819,129.57 - Step 6: Final answer
x = 630,078.38
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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.