Finding the Fourth Proportional to 1,321,410,963.87, 1,977,805,073.97 and 971,564,272.11
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Solution
The fourth proportional to 1,321,410,963.87, 1,977,805,073.97 and 971,564,272.11 is: 1,454,176,482.27
Step by Step Solution
- Step 1: Write the proportion equation
1,321,410,963.87 : 1,977,805,073.97 = 971,564,272.11 : x - Step 2: Convert to fraction form
1,321,410,963.87/1,977,805,073.97 = 971,564,272.11/x - Step 3: Cross multiply
1,321,410,963.87x = 1,977,805,073.97 × 971,564,272.11 - Step 4: Simplify right side
1,321,410,963.87x = 1,921,564,747,067,127,808 - Step 5: Solve for x
x = 1,921,564,747,067,127,808/1,321,410,963.87 - Step 6: Final answer
x = 1,454,176,482.27
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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.