Finding the Fourth Proportional to 1,398,471,001.86, 1,929,889,691.58 and 771,939,263.76
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Solution
The fourth proportional to 1,398,471,001.86, 1,929,889,691.58 and 771,939,263.76 is: 1,065,276,023.37
Step by Step Solution
- Step 1: Write the proportion equation
1,398,471,001.86 : 1,929,889,691.58 = 771,939,263.76 : x - Step 2: Convert to fraction form
1,398,471,001.86/1,929,889,691.58 = 771,939,263.76/x - Step 3: Cross multiply
1,398,471,001.86x = 1,929,889,691.58 × 771,939,263.76 - Step 4: Simplify right side
1,398,471,001.86x = 1,489,757,627,656,278,528 - Step 5: Solve for x
x = 1,489,757,627,656,278,528/1,398,471,001.86 - Step 6: Final answer
x = 1,065,276,023.37
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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.