Finding the Fourth Proportional to 1,434,661,565.19, 1,979,771,789.05 and 799,548,261.40
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Solution
The fourth proportional to 1,434,661,565.19, 1,979,771,789.05 and 799,548,261.40 is: 1,103,342,509.70
Step by Step Solution
- Step 1: Write the proportion equation
1,434,661,565.19 : 1,979,771,789.05 = 799,548,261.40 : x - Step 2: Convert to fraction form
1,434,661,565.19/1,979,771,789.05 = 799,548,261.40/x - Step 3: Cross multiply
1,434,661,565.19x = 1,979,771,789.05 × 799,548,261.40 - Step 4: Simplify right side
1,434,661,565.19x = 1,582,923,091,903,694,848 - Step 5: Solve for x
x = 1,582,923,091,903,694,848/1,434,661,565.19 - Step 6: Final answer
x = 1,103,342,509.70
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Double scale
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.