Finding the Fourth Proportional to 1,113,455,187.19, 1,670,872,481.53 and 647,335,987.97
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Solution
The fourth proportional to 1,113,455,187.19, 1,670,872,481.53 and 647,335,987.97 is: 971,404,957.34
Step by Step Solution
- Step 1: Write the proportion equation
1,113,455,187.19 : 1,670,872,481.53 = 647,335,987.97 : x - Step 2: Convert to fraction form
1,113,455,187.19/1,670,872,481.53 = 647,335,987.97/x - Step 3: Cross multiply
1,113,455,187.19x = 1,670,872,481.53 × 647,335,987.97 - Step 4: Simplify right side
1,113,455,187.19x = 1,081,615,888,602,575,744 - Step 5: Solve for x
x = 1,081,615,888,602,575,744/1,113,455,187.19 - Step 6: Final answer
x = 971,404,957.34
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.