Finding the Fourth Proportional to 1,604,672,258.99, 2,214,450,322.49 and 890,207,830.78
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Solution
The fourth proportional to 1,604,672,258.99, 2,214,450,322.49 and 890,207,830.78 is: 1,228,488,251.67
Step by Step Solution
- Step 1: Write the proportion equation
1,604,672,258.99 : 2,214,450,322.49 = 890,207,830.78 : x - Step 2: Convert to fraction form
1,604,672,258.99/2,214,450,322.49 = 890,207,830.78/x - Step 3: Cross multiply
1,604,672,258.99x = 2,214,450,322.49 × 890,207,830.78 - Step 4: Simplify right side
1,604,672,258.99x = 1,971,321,017,953,894,144 - Step 5: Solve for x
x = 1,971,321,017,953,894,144/1,604,672,258.99 - Step 6: Final answer
x = 1,228,488,251.67
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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.