Finding the Fourth Proportional to 485,259,994.80, 727,889,992.20 and 157,734,874.80
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Solution
The fourth proportional to 485,259,994.80, 727,889,992.20 and 157,734,874.80 is: 236,602,312.20
Step by Step Solution
- Step 1: Write the proportion equation
485,259,994.80 : 727,889,992.20 = 157,734,874.80 : x - Step 2: Convert to fraction form
485,259,994.80/727,889,992.20 = 157,734,874.80/x - Step 3: Cross multiply
485,259,994.80x = 727,889,992.20 × 157,734,874.80 - Step 4: Simplify right side
485,259,994.80x = 114,813,636,787,840,000 - Step 5: Solve for x
x = 114,813,636,787,840,000/485,259,994.80 - Step 6: Final answer
x = 236,602,312.20
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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.