Finding the Fourth Proportional to 839,808,840.80, 1,259,713,261.20 and 737,772,168.80
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Solution
The fourth proportional to 839,808,840.80, 1,259,713,261.20 and 737,772,168.80 is: 1,106,658,253.20
Step by Step Solution
- Step 1: Write the proportion equation
839,808,840.80 : 1,259,713,261.20 = 737,772,168.80 : x - Step 2: Convert to fraction form
839,808,840.80/1,259,713,261.20 = 737,772,168.80/x - Step 3: Cross multiply
839,808,840.80x = 1,259,713,261.20 × 737,772,168.80 - Step 4: Simplify right side
839,808,840.80x = 929,381,384,781,644,928 - Step 5: Solve for x
x = 929,381,384,781,644,928/839,808,840.80 - Step 6: Final answer
x = 1,106,658,253.20
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Double scale
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Similar ratio
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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.