Finding the Fourth Proportional to 832,102,415.20, 1,248,153,622.80 and 423,955,727.20
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Solution
The fourth proportional to 832,102,415.20, 1,248,153,622.80 and 423,955,727.20 is: 635,933,590.80
Step by Step Solution
- Step 1: Write the proportion equation
832,102,415.20 : 1,248,153,622.80 = 423,955,727.20 : x - Step 2: Convert to fraction form
832,102,415.20/1,248,153,622.80 = 423,955,727.20/x - Step 3: Cross multiply
832,102,415.20x = 1,248,153,622.80 × 423,955,727.20 - Step 4: Simplify right side
832,102,415.20x = 529,161,876,811,488,448 - Step 5: Solve for x
x = 529,161,876,811,488,448/832,102,415.20 - Step 6: Final answer
x = 635,933,590.80
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Double scale
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Similar ratio
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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.