Finding the Fourth Proportional to 1,520,739,021.36, 2,098,260,157.36 and 860,689,279.92
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Solution
The fourth proportional to 1,520,739,021.36, 2,098,260,157.36 and 860,689,279.92 is: 1,187,547,632.14
Step by Step Solution
- Step 1: Write the proportion equation
1,520,739,021.36 : 2,098,260,157.36 = 860,689,279.92 : x - Step 2: Convert to fraction form
1,520,739,021.36/2,098,260,157.36 = 860,689,279.92/x - Step 3: Cross multiply
1,520,739,021.36x = 2,098,260,157.36 × 860,689,279.92 - Step 4: Simplify right side
1,520,739,021.36x = 1,805,950,023,923,004,160 - Step 5: Solve for x
x = 1,805,950,023,923,004,160/1,520,739,021.36 - Step 6: Final answer
x = 1,187,547,632.14
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1.5x scale
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.