Finding the Fourth Proportional to 1,563,708,271.64, 2,157,959,555.29 and 920,009,138.13
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Solution
The fourth proportional to 1,563,708,271.64, 2,157,959,555.29 and 920,009,138.13 is: 1,269,637,403.98
Step by Step Solution
- Step 1: Write the proportion equation
1,563,708,271.64 : 2,157,959,555.29 = 920,009,138.13 : x - Step 2: Convert to fraction form
1,563,708,271.64/2,157,959,555.29 = 920,009,138.13/x - Step 3: Cross multiply
1,563,708,271.64x = 2,157,959,555.29 × 920,009,138.13 - Step 4: Simplify right side
1,563,708,271.64x = 1,985,342,510,589,097,216 - Step 5: Solve for x
x = 1,985,342,510,589,097,216/1,563,708,271.64 - Step 6: Final answer
x = 1,269,637,403.98
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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.