Finding the Fourth Proportional to 892,175,412.09, 1,231,235,296.13 and 535,001,340.10
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Solution
The fourth proportional to 892,175,412.09, 1,231,235,296.13 and 535,001,340.10 is: 738,321,774.49
Step by Step Solution
- Step 1: Write the proportion equation
892,175,412.09 : 1,231,235,296.13 = 535,001,340.10 : x - Step 2: Convert to fraction form
892,175,412.09/1,231,235,296.13 = 535,001,340.10/x - Step 3: Cross multiply
892,175,412.09x = 1,231,235,296.13 × 535,001,340.10 - Step 4: Simplify right side
892,175,412.09x = 658,712,533,407,970,432 - Step 5: Solve for x
x = 658,712,533,407,970,432/892,175,412.09 - Step 6: Final answer
x = 738,321,774.49
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Double scale
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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.