Finding the Fourth Proportional to 948,888,812.80, 1,420,546,300.80 and 707,621,305.60
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Solution
The fourth proportional to 948,888,812.80, 1,420,546,300.80 and 707,621,305.60 is: 1,059,353,650.79
Step by Step Solution
- Step 1: Write the proportion equation
948,888,812.80 : 1,420,546,300.80 = 707,621,305.60 : x - Step 2: Convert to fraction form
948,888,812.80/1,420,546,300.80 = 707,621,305.60/x - Step 3: Cross multiply
948,888,812.80x = 1,420,546,300.80 × 707,621,305.60 - Step 4: Simplify right side
948,888,812.80x = 1,005,208,828,037,346,304 - Step 5: Solve for x
x = 1,005,208,828,037,346,304/948,888,812.80 - Step 6: Final answer
x = 1,059,353,650.79
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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.