Finding the Fourth Proportional to 772,662,201.99, 1,066,551,190.25 and 459,395,668.62
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Solution
The fourth proportional to 772,662,201.99, 1,066,551,190.25 and 459,395,668.62 is: 634,130,925.39
Step by Step Solution
- Step 1: Write the proportion equation
772,662,201.99 : 1,066,551,190.25 = 459,395,668.62 : x - Step 2: Convert to fraction form
772,662,201.99/1,066,551,190.25 = 459,395,668.62/x - Step 3: Cross multiply
772,662,201.99x = 1,066,551,190.25 × 459,395,668.62 - Step 4: Simplify right side
772,662,201.99x = 489,968,997,162,355,584 - Step 5: Solve for x
x = 489,968,997,162,355,584/772,662,201.99 - Step 6: Final answer
x = 634,130,925.39
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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.