Finding the Fourth Proportional to 874,729,388.76, 1,207,128,726.90 and 478,277,960.28
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Solution
The fourth proportional to 874,729,388.76, 1,207,128,726.90 and 478,277,960.28 is: 660,024,771.91
Step by Step Solution
- Step 1: Write the proportion equation
874,729,388.76 : 1,207,128,726.90 = 478,277,960.28 : x - Step 2: Convert to fraction form
874,729,388.76/1,207,128,726.90 = 478,277,960.28/x - Step 3: Cross multiply
874,729,388.76x = 1,207,128,726.90 × 478,277,960.28 - Step 4: Simplify right side
874,729,388.76x = 577,343,065,297,125,120 - Step 5: Solve for x
x = 577,343,065,297,125,120/874,729,388.76 - Step 6: Final answer
x = 660,024,771.91
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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.