Finding the Fourth Proportional to 1,071,291,009.92, 1,478,375,652.21 and 601,392,206.66
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Solution
The fourth proportional to 1,071,291,009.92, 1,478,375,652.21 and 601,392,206.66 is: 829,917,909.81
Step by Step Solution
- Step 1: Write the proportion equation
1,071,291,009.92 : 1,478,375,652.21 = 601,392,206.66 : x - Step 2: Convert to fraction form
1,071,291,009.92/1,478,375,652.21 = 601,392,206.66/x - Step 3: Cross multiply
1,071,291,009.92x = 1,478,375,652.21 × 601,392,206.66 - Step 4: Simplify right side
1,071,291,009.92x = 889,083,595,754,988,544 - Step 5: Solve for x
x = 889,083,595,754,988,544/1,071,291,009.92 - Step 6: Final answer
x = 829,917,909.81
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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.