Finding the Fourth Proportional to 839,811,121.20, 1,259,716,681.80 and 717,367,114.80
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Solution
The fourth proportional to 839,811,121.20, 1,259,716,681.80 and 717,367,114.80 is: 1,076,050,672.20
Step by Step Solution
- Step 1: Write the proportion equation
839,811,121.20 : 1,259,716,681.80 = 717,367,114.80 : x - Step 2: Convert to fraction form
839,811,121.20/1,259,716,681.80 = 717,367,114.80/x - Step 3: Cross multiply
839,811,121.20x = 1,259,716,681.80 × 717,367,114.80 - Step 4: Simplify right side
839,811,121.20x = 903,679,321,488,295,552 - Step 5: Solve for x
x = 903,679,321,488,295,552/839,811,121.20 - Step 6: Final answer
x = 1,076,050,672.20
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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.