Finding the Fourth Proportional to 1,179,199,987.68, 1,768,736,178 and 361,314,657.12
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Solution
The fourth proportional to 1,179,199,987.68, 1,768,736,178 and 361,314,657.12 is: 541,952,435.86
Step by Step Solution
- Step 1: Write the proportion equation
1,179,199,987.68 : 1,768,736,178 = 361,314,657.12 : x - Step 2: Convert to fraction form
1,179,199,987.68/1,768,736,178 = 361,314,657.12/x - Step 3: Cross multiply
1,179,199,987.68x = 1,768,736,178 × 361,314,657.12 - Step 4: Simplify right side
1,179,199,987.68x = 639,070,305,689,809,280 - Step 5: Solve for x
x = 639,070,305,689,809,280/1,179,199,987.68 - Step 6: Final answer
x = 541,952,435.86
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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.