Finding the Fourth Proportional to 469,645,296.36, 648,118,314.87 and 257,971,699.68
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Solution
The fourth proportional to 469,645,296.36, 648,118,314.87 and 257,971,699.68 is: 356,005,233.26
Step by Step Solution
- Step 1: Write the proportion equation
469,645,296.36 : 648,118,314.87 = 257,971,699.68 : x - Step 2: Convert to fraction form
469,645,296.36/648,118,314.87 = 257,971,699.68/x - Step 3: Cross multiply
469,645,296.36x = 648,118,314.87 × 257,971,699.68 - Step 4: Simplify right side
469,645,296.36x = 167,196,183,280,751,328 - Step 5: Solve for x
x = 167,196,183,280,751,328/469,645,296.36 - Step 6: Final answer
x = 356,005,233.26
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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.