Finding the Fourth Proportional to 1,487,122,947.36, 2,052,218,319 and 818,053,585.36
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Solution
The fourth proportional to 1,487,122,947.36, 2,052,218,319 and 818,053,585.36 is: 1,128,907,705.16
Step by Step Solution
- Step 1: Write the proportion equation
1,487,122,947.36 : 2,052,218,319 = 818,053,585.36 : x - Step 2: Convert to fraction form
1,487,122,947.36/2,052,218,319 = 818,053,585.36/x - Step 3: Cross multiply
1,487,122,947.36x = 2,052,218,319 × 818,053,585.36 - Step 4: Simplify right side
1,487,122,947.36x = 1,678,824,553,799,422,208 - Step 5: Solve for x
x = 1,678,824,553,799,422,208/1,487,122,947.36 - Step 6: Final answer
x = 1,128,907,705.16
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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.