Finding the Fourth Proportional to 1,188,432,801.10, 1,782,649,201.65 and 575,079,028.30
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Solution
The fourth proportional to 1,188,432,801.10, 1,782,649,201.65 and 575,079,028.30 is: 862,618,542.45
Step by Step Solution
- Step 1: Write the proportion equation
1,188,432,801.10 : 1,782,649,201.65 = 575,079,028.30 : x - Step 2: Convert to fraction form
1,188,432,801.10/1,782,649,201.65 = 575,079,028.30/x - Step 3: Cross multiply
1,188,432,801.10x = 1,782,649,201.65 × 575,079,028.30 - Step 4: Simplify right side
1,188,432,801.10x = 1,025,164,170,684,652,672 - Step 5: Solve for x
x = 1,025,164,170,684,652,672/1,188,432,801.10 - Step 6: Final answer
x = 862,618,542.45
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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.