Finding the Fourth Proportional to 1,620,239,762.50, 2,236,290,572.78 and 985,025,279.49
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Solution
The fourth proportional to 1,620,239,762.50, 2,236,290,572.78 and 985,025,279.49 is: 1,359,553,565.75
Step by Step Solution
- Step 1: Write the proportion equation
1,620,239,762.50 : 2,236,290,572.78 = 985,025,279.49 : x - Step 2: Convert to fraction form
1,620,239,762.50/2,236,290,572.78 = 985,025,279.49/x - Step 3: Cross multiply
1,620,239,762.50x = 2,236,290,572.78 × 985,025,279.49 - Step 4: Simplify right side
1,620,239,762.50x = 2,202,802,746,473,472,000 - Step 5: Solve for x
x = 2,202,802,746,473,472,000/1,620,239,762.50 - Step 6: Final answer
x = 1,359,553,565.75
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.