Finding the Fourth Proportional to 7,128,119.80, 10,692,179.70 and 6,708,215.80
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Solution
The fourth proportional to 7,128,119.80, 10,692,179.70 and 6,708,215.80 is: 10,062,323.70
Step by Step Solution
- Step 1: Write the proportion equation
7,128,119.80 : 10,692,179.70 = 6,708,215.80 : x - Step 2: Convert to fraction form
7,128,119.80/10,692,179.70 = 6,708,215.80/x - Step 3: Cross multiply
7,128,119.80x = 10,692,179.70 × 6,708,215.80 - Step 4: Simplify right side
7,128,119.80x = 71,725,448,799,979.25 - Step 5: Solve for x
x = 71,725,448,799,979.25/7,128,119.80 - Step 6: Final answer
x = 10,062,323.70
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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.