Finding the Fourth Proportional to 489,708.80, 734,563.20 and 290,643.20
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Solution
The fourth proportional to 489,708.80, 734,563.20 and 290,643.20 is: 435,964.80
Step by Step Solution
- Step 1: Write the proportion equation
489,708.80 : 734,563.20 = 290,643.20 : x - Step 2: Convert to fraction form
489,708.80/734,563.20 = 290,643.20/x - Step 3: Cross multiply
489,708.80x = 734,563.20 × 290,643.20 - Step 4: Simplify right side
489,708.80x = 213,495,799,050.24 - Step 5: Solve for x
x = 213,495,799,050.24/489,708.80 - Step 6: Final answer
x = 435,964.80
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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.