Finding the Fourth Proportional to 977,107.80, 1,465,661.70 and 811,219.80
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Solution
The fourth proportional to 977,107.80, 1,465,661.70 and 811,219.80 is: 1,216,829.70
Step by Step Solution
- Step 1: Write the proportion equation
977,107.80 : 1,465,661.70 = 811,219.80 : x - Step 2: Convert to fraction form
977,107.80/1,465,661.70 = 811,219.80/x - Step 3: Cross multiply
977,107.80x = 1,465,661.70 × 811,219.80 - Step 4: Simplify right side
977,107.80x = 1,188,973,791,141.66 - Step 5: Solve for x
x = 1,188,973,791,141.66/977,107.80 - Step 6: Final answer
x = 1,216,829.70
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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.