Finding the Fourth Proportional to 970,048,220.09, 1,338,915,615.71 and 631,799,580.70
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Solution
The fourth proportional to 970,048,220.09, 1,338,915,615.71 and 631,799,580.70 is: 872,045,643.79
Step by Step Solution
- Step 1: Write the proportion equation
970,048,220.09 : 1,338,915,615.71 = 631,799,580.70 : x - Step 2: Convert to fraction form
970,048,220.09/1,338,915,615.71 = 631,799,580.70/x - Step 3: Cross multiply
970,048,220.09x = 1,338,915,615.71 × 631,799,580.70 - Step 4: Simplify right side
970,048,220.09x = 845,926,324,594,795,008 - Step 5: Solve for x
x = 845,926,324,594,795,008/970,048,220.09 - Step 6: Final answer
x = 872,045,643.79
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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.