Finding the Fourth Proportional to 850,854.10, 1,276,281.15 and 821,985.70
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Solution
The fourth proportional to 850,854.10, 1,276,281.15 and 821,985.70 is: 1,232,978.55
Step by Step Solution
- Step 1: Write the proportion equation
850,854.10 : 1,276,281.15 = 821,985.70 : x - Step 2: Convert to fraction form
850,854.10/1,276,281.15 = 821,985.70/x - Step 3: Cross multiply
850,854.10x = 1,276,281.15 × 821,985.70 - Step 4: Simplify right side
850,854.10x = 1,049,084,854,479.55 - Step 5: Solve for x
x = 1,049,084,854,479.55/850,854.10 - Step 6: Final answer
x = 1,232,978.55
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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.