Finding the Fourth Proportional to 1,002,236,728.13, 1,383,118,137.12 and 578,842,523.99
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Solution
The fourth proportional to 1,002,236,728.13, 1,383,118,137.12 and 578,842,523.99 is: 798,820,848.40
Step by Step Solution
- Step 1: Write the proportion equation
1,002,236,728.13 : 1,383,118,137.12 = 578,842,523.99 : x - Step 2: Convert to fraction form
1,002,236,728.13/1,383,118,137.12 = 578,842,523.99/x - Step 3: Cross multiply
1,002,236,728.13x = 1,383,118,137.12 × 578,842,523.99 - Step 4: Simplify right side
1,002,236,728.13x = 800,607,593,466,887,680 - Step 5: Solve for x
x = 800,607,593,466,887,680/1,002,236,728.13 - Step 6: Final answer
x = 798,820,848.40
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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.