Finding the Fourth Proportional to 6,420,238,282.80, 9,630,357,424.20 and 5,440,686,231.60
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Solution
The fourth proportional to 6,420,238,282.80, 9,630,357,424.20 and 5,440,686,231.60 is: 8,161,029,347.40
Step by Step Solution
- Step 1: Write the proportion equation
6,420,238,282.80 : 9,630,357,424.20 = 5,440,686,231.60 : x - Step 2: Convert to fraction form
6,420,238,282.80/9,630,357,424.20 = 5,440,686,231.60/x - Step 3: Cross multiply
6,420,238,282.80x = 9,630,357,424.20 × 5,440,686,231.60 - Step 4: Simplify right side
6,420,238,282.80x = 52,395,753,043,231,784,960 - Step 5: Solve for x
x = 52,395,753,043,231,784,960/6,420,238,282.80 - Step 6: Final answer
x = 8,161,029,347.40
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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.