Finding the Fourth Proportional to 989,867.10, 1,487,911.05 and 971,204.70
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Solution
The fourth proportional to 989,867.10, 1,487,911.05 and 971,204.70 is: 1,459,858.81
Step by Step Solution
- Step 1: Write the proportion equation
989,867.10 : 1,487,911.05 = 971,204.70 : x - Step 2: Convert to fraction form
989,867.10/1,487,911.05 = 971,204.70/x - Step 3: Cross multiply
989,867.10x = 1,487,911.05 × 971,204.70 - Step 4: Simplify right side
989,867.10x = 1,445,066,204,941.94 - Step 5: Solve for x
x = 1,445,066,204,941.94/989,867.10 - Step 6: Final answer
x = 1,459,858.81
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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.