Finding the Fourth Proportional to 4,079,631,415.20, 6,119,447,122.80 and 1,319,539,437.60
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Solution
The fourth proportional to 4,079,631,415.20, 6,119,447,122.80 and 1,319,539,437.60 is: 1,979,309,156.40
Step by Step Solution
- Step 1: Write the proportion equation
4,079,631,415.20 : 6,119,447,122.80 = 1,319,539,437.60 : x - Step 2: Convert to fraction form
4,079,631,415.20/6,119,447,122.80 = 1,319,539,437.60/x - Step 3: Cross multiply
4,079,631,415.20x = 6,119,447,122.80 × 1,319,539,437.60 - Step 4: Simplify right side
4,079,631,415.20x = 8,074,851,814,842,449,920 - Step 5: Solve for x
x = 8,074,851,814,842,449,920/4,079,631,415.20 - Step 6: Final answer
x = 1,979,309,156.40
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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.