Finding the Fourth Proportional to 970,814,527.20, 1,456,221,790.80 and 644,297,176.80
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Solution
The fourth proportional to 970,814,527.20, 1,456,221,790.80 and 644,297,176.80 is: 966,445,765.20
Step by Step Solution
- Step 1: Write the proportion equation
970,814,527.20 : 1,456,221,790.80 = 644,297,176.80 : x - Step 2: Convert to fraction form
970,814,527.20/1,456,221,790.80 = 644,297,176.80/x - Step 3: Cross multiply
970,814,527.20x = 1,456,221,790.80 × 644,297,176.80 - Step 4: Simplify right side
970,814,527.20x = 938,239,588,607,080,064 - Step 5: Solve for x
x = 938,239,588,607,080,064/970,814,527.20 - Step 6: Final answer
x = 966,445,765.20
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Double scale
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Similar ratio
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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.