Finding the Fourth Proportional to 944,785,621.20, 1,417,178,431.80 and 715,203,109.20
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Solution
The fourth proportional to 944,785,621.20, 1,417,178,431.80 and 715,203,109.20 is: 1,072,804,663.80
Step by Step Solution
- Step 1: Write the proportion equation
944,785,621.20 : 1,417,178,431.80 = 715,203,109.20 : x - Step 2: Convert to fraction form
944,785,621.20/1,417,178,431.80 = 715,203,109.20/x - Step 3: Cross multiply
944,785,621.20x = 1,417,178,431.80 × 715,203,109.20 - Step 4: Simplify right side
944,785,621.20x = 1,013,570,420,714,540,160 - Step 5: Solve for x
x = 1,013,570,420,714,540,160/944,785,621.20 - Step 6: Final answer
x = 1,072,804,663.80
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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.