Finding the Fourth Proportional to 1,130,664.49, 1,560,376.71 and 640,728.90
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Solution
The fourth proportional to 1,130,664.49, 1,560,376.71 and 640,728.90 is: 884,239.72
Step by Step Solution
- Step 1: Write the proportion equation
1,130,664.49 : 1,560,376.71 = 640,728.90 : x - Step 2: Convert to fraction form
1,130,664.49/1,560,376.71 = 640,728.90/x - Step 3: Cross multiply
1,130,664.49x = 1,560,376.71 × 640,728.90 - Step 4: Simplify right side
1,130,664.49x = 999,778,452,983.92 - Step 5: Solve for x
x = 999,778,452,983.92/1,130,664.49 - Step 6: Final answer
x = 884,239.72
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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.