Finding the Fourth Proportional to 936,282,018.20, 1,292,069,161.56 and 518,621,207.84
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Solution
The fourth proportional to 936,282,018.20, 1,292,069,161.56 and 518,621,207.84 is: 715,697,253.77
Step by Step Solution
- Step 1: Write the proportion equation
936,282,018.20 : 1,292,069,161.56 = 518,621,207.84 : x - Step 2: Convert to fraction form
936,282,018.20/1,292,069,161.56 = 518,621,207.84/x - Step 3: Cross multiply
936,282,018.20x = 1,292,069,161.56 × 518,621,207.84 - Step 4: Simplify right side
936,282,018.20x = 670,094,469,181,063,296 - Step 5: Solve for x
x = 670,094,469,181,063,296/936,282,018.20 - Step 6: Final answer
x = 715,697,253.77
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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.