Finding the Fourth Proportional to 1,330,305.12, 1,994,064.48 and 619,747.20
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Solution
The fourth proportional to 1,330,305.12, 1,994,064.48 and 619,747.20 is: 928,971.75
Step by Step Solution
- Step 1: Write the proportion equation
1,330,305.12 : 1,994,064.48 = 619,747.20 : x - Step 2: Convert to fraction form
1,330,305.12/1,994,064.48 = 619,747.20/x - Step 3: Cross multiply
1,330,305.12x = 1,994,064.48 × 619,747.20 - Step 4: Simplify right side
1,330,305.12x = 1,235,815,878,099.46 - Step 5: Solve for x
x = 1,235,815,878,099.46/1,330,305.12 - Step 6: Final answer
x = 928,971.75
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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.