Finding the Fourth Proportional to 1,023,368,251.50, 1,412,248,189.29 and 553,469,572.44
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Solution
The fourth proportional to 1,023,368,251.50, 1,412,248,189.29 and 553,469,572.44 is: 763,788,011.17
Step by Step Solution
- Step 1: Write the proportion equation
1,023,368,251.50 : 1,412,248,189.29 = 553,469,572.44 : x - Step 2: Convert to fraction form
1,023,368,251.50/1,412,248,189.29 = 553,469,572.44/x - Step 3: Cross multiply
1,023,368,251.50x = 1,412,248,189.29 × 553,469,572.44 - Step 4: Simplify right side
1,023,368,251.50x = 781,636,401,505,500,544 - Step 5: Solve for x
x = 781,636,401,505,500,544/1,023,368,251.50 - Step 6: Final answer
x = 763,788,011.17
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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.