Finding the Fourth Proportional to 1,276,324,579.95, 1,761,463,332.54 and 748,132,345.23
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Solution
The fourth proportional to 1,276,324,579.95, 1,761,463,332.54 and 748,132,345.23 is: 1,032,502,009.84
Step by Step Solution
- Step 1: Write the proportion equation
1,276,324,579.95 : 1,761,463,332.54 = 748,132,345.23 : x - Step 2: Convert to fraction form
1,276,324,579.95/1,761,463,332.54 = 748,132,345.23/x - Step 3: Cross multiply
1,276,324,579.95x = 1,761,463,332.54 × 748,132,345.23 - Step 4: Simplify right side
1,276,324,579.95x = 1,317,807,694,009,801,472 - Step 5: Solve for x
x = 1,317,807,694,009,801,472/1,276,324,579.95 - Step 6: Final answer
x = 1,032,502,009.84
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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.