Finding the Fourth Proportional to 612,869,365.80, 919,304,048.70 and 612,869,365.80
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Solution
The fourth proportional to 612,869,365.80, 919,304,048.70 and 612,869,365.80 is: 919,304,048.70
Step by Step Solution
- Step 1: Write the proportion equation
612,869,365.80 : 919,304,048.70 = 612,869,365.80 : x - Step 2: Convert to fraction form
612,869,365.80/919,304,048.70 = 612,869,365.80/x - Step 3: Cross multiply
612,869,365.80x = 919,304,048.70 × 612,869,365.80 - Step 4: Simplify right side
612,869,365.80x = 563,413,289,304,141,312 - Step 5: Solve for x
x = 563,413,289,304,141,312/612,869,365.80 - Step 6: Final answer
x = 919,304,048.70
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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.