Finding the Fourth Proportional to 854,025,904.30, 1,278,487,939.65 and 508,801,830.70
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Solution
The fourth proportional to 854,025,904.30, 1,278,487,939.65 and 508,801,830.70 is: 761,682,989.88
Step by Step Solution
- Step 1: Write the proportion equation
854,025,904.30 : 1,278,487,939.65 = 508,801,830.70 : x - Step 2: Convert to fraction form
854,025,904.30/1,278,487,939.65 = 508,801,830.70/x - Step 3: Cross multiply
854,025,904.30x = 1,278,487,939.65 × 508,801,830.70 - Step 4: Simplify right side
854,025,904.30x = 650,497,004,221,791,104 - Step 5: Solve for x
x = 650,497,004,221,791,104/854,025,904.30 - Step 6: Final answer
x = 761,682,989.88
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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.