Finding the Fourth Proportional to 1,023,368,251.48, 1,412,248,189.28 and 553,469,572.42
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Solution
The fourth proportional to 1,023,368,251.48, 1,412,248,189.28 and 553,469,572.42 is: 763,788,011.15
Step by Step Solution
- Step 1: Write the proportion equation
1,023,368,251.48 : 1,412,248,189.28 = 553,469,572.42 : x - Step 2: Convert to fraction form
1,023,368,251.48/1,412,248,189.28 = 553,469,572.42/x - Step 3: Cross multiply
1,023,368,251.48x = 1,412,248,189.28 × 553,469,572.42 - Step 4: Simplify right side
1,023,368,251.48x = 781,636,401,465,422,976 - Step 5: Solve for x
x = 781,636,401,465,422,976/1,023,368,251.48 - Step 6: Final answer
x = 763,788,011.15
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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.