Finding the Fourth Proportional to 1,563,708,276.64, 2,157,959,562.20 and 920,009,143.14
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Solution
The fourth proportional to 1,563,708,276.64, 2,157,959,562.20 and 920,009,143.14 is: 1,269,637,410.90
Step by Step Solution
- Step 1: Write the proportion equation
1,563,708,276.64 : 2,157,959,562.20 = 920,009,143.14 : x - Step 2: Convert to fraction form
1,563,708,276.64/2,157,959,562.20 = 920,009,143.14/x - Step 3: Cross multiply
1,563,708,276.64x = 2,157,959,562.20 × 920,009,143.14 - Step 4: Simplify right side
1,563,708,276.64x = 1,985,342,527,750,391,296 - Step 5: Solve for x
x = 1,985,342,527,750,391,296/1,563,708,276.64 - Step 6: Final answer
x = 1,269,637,410.90
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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.