Finding the Fourth Proportional to 987,401,722.68, 1,481,349,280.86 and 696,836,027.88
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Solution
The fourth proportional to 987,401,722.68, 1,481,349,280.86 and 696,836,027.88 is: 1,045,428,142.43
Step by Step Solution
- Step 1: Write the proportion equation
987,401,722.68 : 1,481,349,280.86 = 696,836,027.88 : x - Step 2: Convert to fraction form
987,401,722.68/1,481,349,280.86 = 696,836,027.88/x - Step 3: Cross multiply
987,401,722.68x = 1,481,349,280.86 × 696,836,027.88 - Step 4: Simplify right side
987,401,722.68x = 1,032,257,548,777,376,768 - Step 5: Solve for x
x = 1,032,257,548,777,376,768/987,401,722.68 - Step 6: Final answer
x = 1,045,428,142.43
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.