Finding the Fourth Proportional to 612,102,649.20, 918,153,973.80 and 612,102,649.20
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Solution
The fourth proportional to 612,102,649.20, 918,153,973.80 and 612,102,649.20 is: 918,153,973.80
Step by Step Solution
- Step 1: Write the proportion equation
612,102,649.20 : 918,153,973.80 = 612,102,649.20 : x - Step 2: Convert to fraction form
612,102,649.20/918,153,973.80 = 612,102,649.20/x - Step 3: Cross multiply
612,102,649.20x = 918,153,973.80 × 612,102,649.20 - Step 4: Simplify right side
612,102,649.20x = 562,004,479,736,487,424 - Step 5: Solve for x
x = 562,004,479,736,487,424/612,102,649.20 - Step 6: Final answer
x = 918,153,973.80
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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.