Finding the Fourth Proportional to 1,130,659.62, 1,560,370.11 and 640,724.10
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Solution
The fourth proportional to 1,130,659.62, 1,560,370.11 and 640,724.10 is: 884,233.17
Step by Step Solution
- Step 1: Write the proportion equation
1,130,659.62 : 1,560,370.11 = 640,724.10 : x - Step 2: Convert to fraction form
1,130,659.62/1,560,370.11 = 640,724.10/x - Step 3: Cross multiply
1,130,659.62x = 1,560,370.11 × 640,724.10 - Step 4: Simplify right side
1,130,659.62x = 999,766,734,396.65 - Step 5: Solve for x
x = 999,766,734,396.65/1,130,659.62 - Step 6: Final answer
x = 884,233.17
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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.