Finding the Fourth Proportional to 1,213,464,237.72, 1,674,104,187.18 and 704,740,350.96
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Solution
The fourth proportional to 1,213,464,237.72, 1,674,104,187.18 and 704,740,350.96 is: 972,264,971.43
Step by Step Solution
- Step 1: Write the proportion equation
1,213,464,237.72 : 1,674,104,187.18 = 704,740,350.96 : x - Step 2: Convert to fraction form
1,213,464,237.72/1,674,104,187.18 = 704,740,350.96/x - Step 3: Cross multiply
1,213,464,237.72x = 1,674,104,187.18 × 704,740,350.96 - Step 4: Simplify right side
1,213,464,237.72x = 1,179,808,772,416,838,912 - Step 5: Solve for x
x = 1,179,808,772,416,838,912/1,213,464,237.72 - Step 6: Final answer
x = 972,264,971.43
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.