Finding the Fourth Proportional to 809,646,747.35, 1,214,470,120.68 and 196,230,973.10
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Solution
The fourth proportional to 809,646,747.35, 1,214,470,120.68 and 196,230,973.10 is: 294,346,459.56
Step by Step Solution
- Step 1: Write the proportion equation
809,646,747.35 : 1,214,470,120.68 = 196,230,973.10 : x - Step 2: Convert to fraction form
809,646,747.35/1,214,470,120.68 = 196,230,973.10/x - Step 3: Cross multiply
809,646,747.35x = 1,214,470,120.68 × 196,230,973.10 - Step 4: Simplify right side
809,646,747.35x = 238,316,653,575,838,496 - Step 5: Solve for x
x = 238,316,653,575,838,496/809,646,747.35 - Step 6: Final answer
x = 294,346,459.56
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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.