Finding the Fourth Proportional to 1,321,410,854.96, 1,977,804,910.80 and 971,564,163.20
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Solution
The fourth proportional to 1,321,410,854.96, 1,977,804,910.80 and 971,564,163.20 is: 1,454,176,319.14
Step by Step Solution
- Step 1: Write the proportion equation
1,321,410,854.96 : 1,977,804,910.80 = 971,564,163.20 : x - Step 2: Convert to fraction form
1,321,410,854.96/1,977,804,910.80 = 971,564,163.20/x - Step 3: Cross multiply
1,321,410,854.96x = 1,977,804,910.80 × 971,564,163.20 - Step 4: Simplify right side
1,321,410,854.96x = 1,921,564,373,134,252,800 - Step 5: Solve for x
x = 1,921,564,373,134,252,800/1,321,410,854.96 - Step 6: Final answer
x = 1,454,176,319.14
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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.