Finding the Fourth Proportional to 869,162,959.80, 1,303,744,439.70 and 665,089,615.80
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Solution
The fourth proportional to 869,162,959.80, 1,303,744,439.70 and 665,089,615.80 is: 997,634,423.70
Step by Step Solution
- Step 1: Write the proportion equation
869,162,959.80 : 1,303,744,439.70 = 665,089,615.80 : x - Step 2: Convert to fraction form
869,162,959.80/1,303,744,439.70 = 665,089,615.80/x - Step 3: Cross multiply
869,162,959.80x = 1,303,744,439.70 × 665,089,615.80 - Step 4: Simplify right side
869,162,959.80x = 867,106,888,501,459,200 - Step 5: Solve for x
x = 867,106,888,501,459,200/869,162,959.80 - Step 6: Final answer
x = 997,634,423.70
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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.