Finding the Fourth Proportional to 712,074,391.60, 982,649,654.76 and 394,533,479.44
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Solution
The fourth proportional to 712,074,391.60, 982,649,654.76 and 394,533,479.44 is: 544,448,995.69
Step by Step Solution
- Step 1: Write the proportion equation
712,074,391.60 : 982,649,654.76 = 394,533,479.44 : x - Step 2: Convert to fraction form
712,074,391.60/982,649,654.76 = 394,533,479.44/x - Step 3: Cross multiply
712,074,391.60x = 982,649,654.76 × 394,533,479.44 - Step 4: Simplify right side
712,074,391.60x = 387,688,187,362,977,536 - Step 5: Solve for x
x = 387,688,187,362,977,536/712,074,391.60 - Step 6: Final answer
x = 544,448,995.69
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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.