Finding the Fourth Proportional to 860,145.55, 1,290,373.58 and 354,430.15
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Solution
The fourth proportional to 860,145.55, 1,290,373.58 and 354,430.15 is: 531,709.20
Step by Step Solution
- Step 1: Write the proportion equation
860,145.55 : 1,290,373.58 = 354,430.15 : x - Step 2: Convert to fraction form
860,145.55/1,290,373.58 = 354,430.15/x - Step 3: Cross multiply
860,145.55x = 1,290,373.58 × 354,430.15 - Step 4: Simplify right side
860,145.55x = 457,347,299,743.29 - Step 5: Solve for x
x = 457,347,299,743.29/860,145.55 - Step 6: Final answer
x = 531,709.20
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.