Finding the Fourth Proportional to 633,312,193.80, 949,968,290.70 and 378,508,225.80
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Solution
The fourth proportional to 633,312,193.80, 949,968,290.70 and 378,508,225.80 is: 567,762,338.70
Step by Step Solution
- Step 1: Write the proportion equation
633,312,193.80 : 949,968,290.70 = 378,508,225.80 : x - Step 2: Convert to fraction form
633,312,193.80/949,968,290.70 = 378,508,225.80/x - Step 3: Cross multiply
633,312,193.80x = 949,968,290.70 × 378,508,225.80 - Step 4: Simplify right side
633,312,193.80x = 359,570,812,279,115,648 - Step 5: Solve for x
x = 359,570,812,279,115,648/633,312,193.80 - Step 6: Final answer
x = 567,762,338.70
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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.