Finding the Fourth Proportional to 611,349.20, 917,023.80 and 471,381.20
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Solution
The fourth proportional to 611,349.20, 917,023.80 and 471,381.20 is: 707,071.80
Step by Step Solution
- Step 1: Write the proportion equation
611,349.20 : 917,023.80 = 471,381.20 : x - Step 2: Convert to fraction form
611,349.20/917,023.80 = 471,381.20/x - Step 3: Cross multiply
611,349.20x = 917,023.80 × 471,381.20 - Step 4: Simplify right side
611,349.20x = 432,267,779,272.56 - Step 5: Solve for x
x = 432,267,779,272.56/611,349.20 - Step 6: Final answer
x = 707,071.80
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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.