Finding the Fourth Proportional to 611,299,855.70, 916,949,783.55 and 611,299,855.70
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Solution
The fourth proportional to 611,299,855.70, 916,949,783.55 and 611,299,855.70 is: 916,949,783.55
Step by Step Solution
- Step 1: Write the proportion equation
611,299,855.70 : 916,949,783.55 = 611,299,855.70 : x - Step 2: Convert to fraction form
611,299,855.70/916,949,783.55 = 611,299,855.70/x - Step 3: Cross multiply
611,299,855.70x = 916,949,783.55 × 611,299,855.70 - Step 4: Simplify right side
611,299,855.70x = 560,531,270,368,261,248 - Step 5: Solve for x
x = 560,531,270,368,261,248/611,299,855.70 - Step 6: Final answer
x = 916,949,783.55
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Double scale
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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.