Finding the Fourth Proportional to 1,318,393,590.38, 1,818,555,582.99 and 782,165,614.76
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Solution
The fourth proportional to 1,318,393,590.38, 1,818,555,582.99 and 782,165,614.76 is: 1,078,897,573.48
Step by Step Solution
- Step 1: Write the proportion equation
1,318,393,590.38 : 1,818,555,582.99 = 782,165,614.76 : x - Step 2: Convert to fraction form
1,318,393,590.38/1,818,555,582.99 = 782,165,614.76/x - Step 3: Cross multiply
1,318,393,590.38x = 1,818,555,582.99 × 782,165,614.76 - Step 4: Simplify right side
1,318,393,590.38x = 1,422,411,645,555,444,480 - Step 5: Solve for x
x = 1,422,411,645,555,444,480/1,318,393,590.38 - Step 6: Final answer
x = 1,078,897,573.48
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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.