Finding the Fourth Proportional to 1,515,158,448.64, 2,090,694,478.08 and 920,133,491.20
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Solution
The fourth proportional to 1,515,158,448.64, 2,090,694,478.08 and 920,133,491.20 is: 1,269,648,076.00
Step by Step Solution
- Step 1: Write the proportion equation
1,515,158,448.64 : 2,090,694,478.08 = 920,133,491.20 : x - Step 2: Convert to fraction form
1,515,158,448.64/2,090,694,478.08 = 920,133,491.20/x - Step 3: Cross multiply
1,515,158,448.64x = 2,090,694,478.08 × 920,133,491.20 - Step 4: Simplify right side
1,515,158,448.64x = 1,923,718,009,148,312,320 - Step 5: Solve for x
x = 1,923,718,009,148,312,320/1,515,158,448.64 - Step 6: Final answer
x = 1,269,648,076.00
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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.