Finding the Fourth Proportional to 1,405,934.70, 2,108,902.05 and 507,515.10
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Solution
The fourth proportional to 1,405,934.70, 2,108,902.05 and 507,515.10 is: 761,272.65
Step by Step Solution
- Step 1: Write the proportion equation
1,405,934.70 : 2,108,902.05 = 507,515.10 : x - Step 2: Convert to fraction form
1,405,934.70/2,108,902.05 = 507,515.10/x - Step 3: Cross multiply
1,405,934.70x = 2,108,902.05 × 507,515.10 - Step 4: Simplify right side
1,405,934.70x = 1,070,299,634,795.95 - Step 5: Solve for x
x = 1,070,299,634,795.95/1,405,934.70 - Step 6: Final answer
x = 761,272.65
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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.