Finding the Fourth Proportional to 1,219,419,104.40, 1,829,128,656.60 and 401,425,117.20
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Solution
The fourth proportional to 1,219,419,104.40, 1,829,128,656.60 and 401,425,117.20 is: 602,137,675.80
Step by Step Solution
- Step 1: Write the proportion equation
1,219,419,104.40 : 1,829,128,656.60 = 401,425,117.20 : x - Step 2: Convert to fraction form
1,219,419,104.40/1,829,128,656.60 = 401,425,117.20/x - Step 3: Cross multiply
1,219,419,104.40x = 1,829,128,656.60 × 401,425,117.20 - Step 4: Simplify right side
1,219,419,104.40x = 734,258,185,349,533,440 - Step 5: Solve for x
x = 734,258,185,349,533,440/1,219,419,104.40 - Step 6: Final answer
x = 602,137,675.80
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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.