Finding the Fourth Proportional to 926,803.80, 1,390,205.70 and 553,555.80
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Solution
The fourth proportional to 926,803.80, 1,390,205.70 and 553,555.80 is: 830,333.70
Step by Step Solution
- Step 1: Write the proportion equation
926,803.80 : 1,390,205.70 = 553,555.80 : x - Step 2: Convert to fraction form
926,803.80/1,390,205.70 = 553,555.80/x - Step 3: Cross multiply
926,803.80x = 1,390,205.70 × 553,555.80 - Step 4: Simplify right side
926,803.80x = 769,556,428,428.06 - Step 5: Solve for x
x = 769,556,428,428.06/926,803.80 - Step 6: Final answer
x = 830,333.70
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1.5x scale
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.