Finding the Fourth Proportional to 788,973,886.70, 1,183,460,830.05 and 329,241,992.30
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Solution
The fourth proportional to 788,973,886.70, 1,183,460,830.05 and 329,241,992.30 is: 493,862,988.45
Step by Step Solution
- Step 1: Write the proportion equation
788,973,886.70 : 1,183,460,830.05 = 329,241,992.30 : x - Step 2: Convert to fraction form
788,973,886.70/1,183,460,830.05 = 329,241,992.30/x - Step 3: Cross multiply
788,973,886.70x = 1,183,460,830.05 × 329,241,992.30 - Step 4: Simplify right side
788,973,886.70x = 389,645,001,494,673,728 - Step 5: Solve for x
x = 389,645,001,494,673,728/788,973,886.70 - Step 6: Final answer
x = 493,862,988.45
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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.