Finding the Fourth Proportional to 1,078,344,615.20, 1,617,516,922.80 and 534,149,031.20
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Solution
The fourth proportional to 1,078,344,615.20, 1,617,516,922.80 and 534,149,031.20 is: 801,223,546.80
Step by Step Solution
- Step 1: Write the proportion equation
1,078,344,615.20 : 1,617,516,922.80 = 534,149,031.20 : x - Step 2: Convert to fraction form
1,078,344,615.20/1,617,516,922.80 = 534,149,031.20/x - Step 3: Cross multiply
1,078,344,615.20x = 1,617,516,922.80 × 534,149,031.20 - Step 4: Simplify right side
1,078,344,615.20x = 863,995,097,263,225,088 - Step 5: Solve for x
x = 863,995,097,263,225,088/1,078,344,615.20 - Step 6: Final answer
x = 801,223,546.80
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Half scale
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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.