Finding the Fourth Proportional to 830,889,994.80, 1,246,334,992.20 and 346,152,817.20
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Solution
The fourth proportional to 830,889,994.80, 1,246,334,992.20 and 346,152,817.20 is: 519,229,225.80
Step by Step Solution
- Step 1: Write the proportion equation
830,889,994.80 : 1,246,334,992.20 = 346,152,817.20 : x - Step 2: Convert to fraction form
830,889,994.80/1,246,334,992.20 = 346,152,817.20/x - Step 3: Cross multiply
830,889,994.80x = 1,246,334,992.20 × 346,152,817.20 - Step 4: Simplify right side
830,889,994.80x = 431,422,368,724,970,048 - Step 5: Solve for x
x = 431,422,368,724,970,048/830,889,994.80 - Step 6: Final answer
x = 519,229,225.80
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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.