Finding the Fourth Proportional to 977,851.20, 1,349,138.72 and 633,142.08
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Solution
The fourth proportional to 977,851.20, 1,349,138.72 and 633,142.08 is: 873,544.46
Step by Step Solution
- Step 1: Write the proportion equation
977,851.20 : 1,349,138.72 = 633,142.08 : x - Step 2: Convert to fraction form
977,851.20/1,349,138.72 = 633,142.08/x - Step 3: Cross multiply
977,851.20x = 1,349,138.72 × 633,142.08 - Step 4: Simplify right side
977,851.20x = 854,196,495,389.34 - Step 5: Solve for x
x = 854,196,495,389.34/977,851.20 - Step 6: Final answer
x = 873,544.46
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.