Finding the Fourth Proportional to 854,656,970.40, 1,281,985,455.60 and 716,907,463.20
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Solution
The fourth proportional to 854,656,970.40, 1,281,985,455.60 and 716,907,463.20 is: 1,075,361,194.80
Step by Step Solution
- Step 1: Write the proportion equation
854,656,970.40 : 1,281,985,455.60 = 716,907,463.20 : x - Step 2: Convert to fraction form
854,656,970.40/1,281,985,455.60 = 716,907,463.20/x - Step 3: Cross multiply
854,656,970.40x = 1,281,985,455.60 × 716,907,463.20 - Step 4: Simplify right side
854,656,970.40x = 919,064,940,833,492,224 - Step 5: Solve for x
x = 919,064,940,833,492,224/854,656,970.40 - Step 6: Final answer
x = 1,075,361,194.80
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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.