Finding the Fourth Proportional to 1,121,926,203.84, 1,548,265,943.52 and 626,909,776.32
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Solution
The fourth proportional to 1,121,926,203.84, 1,548,265,943.52 and 626,909,776.32 is: 865,139,839.87
Step by Step Solution
- Step 1: Write the proportion equation
1,121,926,203.84 : 1,548,265,943.52 = 626,909,776.32 : x - Step 2: Convert to fraction form
1,121,926,203.84/1,548,265,943.52 = 626,909,776.32/x - Step 3: Cross multiply
1,121,926,203.84x = 1,548,265,943.52 × 626,909,776.32 - Step 4: Simplify right side
1,121,926,203.84x = 970,623,056,335,997,056 - Step 5: Solve for x
x = 970,623,056,335,997,056/1,121,926,203.84 - Step 6: Final answer
x = 865,139,839.87
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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.