Finding the Fourth Proportional to 1,432,127,285.91, 2,148,191,524.35 and 644,260,681.71
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Solution
The fourth proportional to 1,432,127,285.91, 2,148,191,524.35 and 644,260,681.71 is: 966,391,290.45
Step by Step Solution
- Step 1: Write the proportion equation
1,432,127,285.91 : 2,148,191,524.35 = 644,260,681.71 : x - Step 2: Convert to fraction form
1,432,127,285.91/2,148,191,524.35 = 644,260,681.71/x - Step 3: Cross multiply
1,432,127,285.91x = 2,148,191,524.35 × 644,260,681.71 - Step 4: Simplify right side
1,432,127,285.91x = 1,383,995,335,921,374,976 - Step 5: Solve for x
x = 1,383,995,335,921,374,976/1,432,127,285.91 - Step 6: Final answer
x = 966,391,290.45
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.