Finding the Fourth Proportional to 811,961,134.63, 1,120,507,447.04 and 440,683,166.00
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Solution
The fourth proportional to 811,961,134.63, 1,120,507,447.04 and 440,683,166.00 is: 608,143,355.92
Step by Step Solution
- Step 1: Write the proportion equation
811,961,134.63 : 1,120,507,447.04 = 440,683,166.00 : x - Step 2: Convert to fraction form
811,961,134.63/1,120,507,447.04 = 440,683,166.00/x - Step 3: Cross multiply
811,961,134.63x = 1,120,507,447.04 × 440,683,166.00 - Step 4: Simplify right side
811,961,134.63x = 493,788,769,290,392,960 - Step 5: Solve for x
x = 493,788,769,290,392,960/811,961,134.63 - Step 6: Final answer
x = 608,143,355.92
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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.