Finding the Fourth Proportional to 1,130,793.72, 1,695,403.26 and 420,631.08
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Solution
The fourth proportional to 1,130,793.72, 1,695,403.26 and 420,631.08 is: 630,653.75
Step by Step Solution
- Step 1: Write the proportion equation
1,130,793.72 : 1,695,403.26 = 420,631.08 : x - Step 2: Convert to fraction form
1,130,793.72/1,695,403.26 = 420,631.08/x - Step 3: Cross multiply
1,130,793.72x = 1,695,403.26 × 420,631.08 - Step 4: Simplify right side
1,130,793.72x = 713,139,304,289.32 - Step 5: Solve for x
x = 713,139,304,289.32/1,130,793.72 - Step 6: Final answer
x = 630,653.75
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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.