Finding the Fourth Proportional to 1,905,857,882.78, 2,630,395,929.05 and 1,587,813,801.44
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Solution
The fourth proportional to 1,905,857,882.78, 2,630,395,929.05 and 1,587,813,801.44 is: 2,191,443,022.66
Step by Step Solution
- Step 1: Write the proportion equation
1,905,857,882.78 : 2,630,395,929.05 = 1,587,813,801.44 : x - Step 2: Convert to fraction form
1,905,857,882.78/2,630,395,929.05 = 1,587,813,801.44/x - Step 3: Cross multiply
1,905,857,882.78x = 2,630,395,929.05 × 1,587,813,801.44 - Step 4: Simplify right side
1,905,857,882.78x = 4,176,578,959,381,964,288 - Step 5: Solve for x
x = 4,176,578,959,381,964,288/1,905,857,882.78 - Step 6: Final answer
x = 2,191,443,022.66
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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.