Finding the Fourth Proportional to 721,777,188.17, 996,053,256.84 and 391,752,395.21
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Solution
The fourth proportional to 721,777,188.17, 996,053,256.84 and 391,752,395.21 is: 540,618,705.49
Step by Step Solution
- Step 1: Write the proportion equation
721,777,188.17 : 996,053,256.84 = 391,752,395.21 : x - Step 2: Convert to fraction form
721,777,188.17/996,053,256.84 = 391,752,395.21/x - Step 3: Cross multiply
721,777,188.17x = 996,053,256.84 × 391,752,395.21 - Step 4: Simplify right side
721,777,188.17x = 390,206,249,118,811,072 - Step 5: Solve for x
x = 390,206,249,118,811,072/721,777,188.17 - Step 6: Final answer
x = 540,618,705.49
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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.