Finding the Fourth Proportional to 909,658,559.69, 1,255,328,802.65 and 491,970,844.99
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Solution
The fourth proportional to 909,658,559.69, 1,255,328,802.65 and 491,970,844.99 is: 678,919,760.82
Step by Step Solution
- Step 1: Write the proportion equation
909,658,559.69 : 1,255,328,802.65 = 491,970,844.99 : x - Step 2: Convert to fraction form
909,658,559.69/1,255,328,802.65 = 491,970,844.99/x - Step 3: Cross multiply
909,658,559.69x = 1,255,328,802.65 × 491,970,844.99 - Step 4: Simplify right side
909,658,559.69x = 617,585,171,775,749,504 - Step 5: Solve for x
x = 617,585,171,775,749,504/909,658,559.69 - Step 6: Final answer
x = 678,919,760.82
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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.