Finding the Fourth Proportional to 817,623,991.68, 1,128,325,699.08 and 465,199,973.88
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Solution
The fourth proportional to 817,623,991.68, 1,128,325,699.08 and 465,199,973.88 is: 641,978,575.83
Step by Step Solution
- Step 1: Write the proportion equation
817,623,991.68 : 1,128,325,699.08 = 465,199,973.88 : x - Step 2: Convert to fraction form
817,623,991.68/1,128,325,699.08 = 465,199,973.88/x - Step 3: Cross multiply
817,623,991.68x = 1,128,325,699.08 × 465,199,973.88 - Step 4: Simplify right side
817,623,991.68x = 524,897,085,740,148,672 - Step 5: Solve for x
x = 524,897,085,740,148,672/817,623,991.68 - Step 6: Final answer
x = 641,978,575.83
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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.