Finding the Fourth Proportional to 783,881,523.64, 1,081,205,756.46 and 515,871,966.07
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Solution
The fourth proportional to 783,881,523.64, 1,081,205,756.46 and 515,871,966.07 is: 711,540,867.45
Step by Step Solution
- Step 1: Write the proportion equation
783,881,523.64 : 1,081,205,756.46 = 515,871,966.07 : x - Step 2: Convert to fraction form
783,881,523.64/1,081,205,756.46 = 515,871,966.07/x - Step 3: Cross multiply
783,881,523.64x = 1,081,205,756.46 × 515,871,966.07 - Step 4: Simplify right side
783,881,523.64x = 557,763,739,311,221,824 - Step 5: Solve for x
x = 557,763,739,311,221,824/783,881,523.64 - Step 6: Final answer
x = 711,540,867.45
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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.