Finding the Fourth Proportional to 1,259,723,218.80, 1,889,584,828.20 and 569,652,985.20
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Solution
The fourth proportional to 1,259,723,218.80, 1,889,584,828.20 and 569,652,985.20 is: 854,479,477.80
Step by Step Solution
- Step 1: Write the proportion equation
1,259,723,218.80 : 1,889,584,828.20 = 569,652,985.20 : x - Step 2: Convert to fraction form
1,259,723,218.80/1,889,584,828.20 = 569,652,985.20/x - Step 3: Cross multiply
1,259,723,218.80x = 1,889,584,828.20 × 569,652,985.20 - Step 4: Simplify right side
1,259,723,218.80x = 1,076,407,638,172,759,296 - Step 5: Solve for x
x = 1,076,407,638,172,759,296/1,259,723,218.80 - Step 6: Final answer
x = 854,479,477.80
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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.