Finding the Fourth Proportional to 868,968,128.70, 1,303,452,193.05 and 255,614,355.90
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Solution
The fourth proportional to 868,968,128.70, 1,303,452,193.05 and 255,614,355.90 is: 383,421,533.85
Step by Step Solution
- Step 1: Write the proportion equation
868,968,128.70 : 1,303,452,193.05 = 255,614,355.90 : x - Step 2: Convert to fraction form
868,968,128.70/1,303,452,193.05 = 255,614,355.90/x - Step 3: Cross multiply
868,968,128.70x = 1,303,452,193.05 × 255,614,355.90 - Step 4: Simplify right side
868,968,128.70x = 333,181,092,772,918,208 - Step 5: Solve for x
x = 333,181,092,772,918,208/868,968,128.70 - Step 6: Final answer
x = 383,421,533.85
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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.